ޤ륱
֤V3֣飹פäΤǡ礦ɥץ򤤤äƤޤ
ʤΤǡäȤơ
ʤΤǡDz򤤤Ƥޤ
⤦äȹͤƤߤޤ
1123ڡ 0:14:11 MAIL:take4310@mobile.email.ne.jp HomePage:ޤ륱28732
ӣioa
ˤԹäȤΤȡ
Ǥ߿ޤ
1123ڡ 0:18:26 28733
Ĺ
ޤǽΥ򣰤ȲꤷޤΥϣΣ̤ꡣ
ΤüʤΤϣȣ
ޤϡΥѥǹͤޤμϣΣ̤ǡǸΥϣʳϣ̤ꡢϣ̤ꡣ
ĤޤꡢΥѥϣܣᣳ̤ꡣ碌ƣ̤ꡣʣ
μüǤʤѥ򼡤˹ͤޤΥѥǤϡμϣȣΣ̤ǡǸΥϣȣʳϣ̤ꡢȣϣ̤ꡣ
ĤޤꡢΥѥϣܣᣳ̤ꡣͤȣ̤ꡣʣ¡
ʣˤȡʣ¡ˤĤǺǽΥƤȤ߹碌顢ϡʣܣˡᣲ̤ꡣ
ѷ򤫤ơĺȤˣ򿶤äƹͤޡȤʤΤʤȤפޤ
1123ڡ 0:25:10 28734
2&6
Ϥƽ񤭹ߤƤޤȤ⵹ꤤפޤ
ޤϤ˶Ǥ߿夲ޤ
Ĥڤˤ꤬ȤޤʻƳǼƬҤͤäƹͤ뤳ȤʤäΤǤΥȤۤȤˤ褤ɷȤʤäƤޤ
1123ڡ 0:42:24 28735
ޥ
ޡ𤷤ޤm(__)m

ϡ¤ǯ2/22ѤˤȤäƤΤꤷäΤǤ(^^;ͧͤݤߤȸ줿Τ...

¤Ϥϡ˿ؤ2000ǯΤΡˤꤷΤǤ10*7*6*5 + 10 *2*6 =2220ȤΤꤷƤޤäƤϤäƲ򤭤ޤ(^^;
PowerBook 1123ڡ 1:10:29 MAIL:masaru-y@sansu.org HomePage:28736
ޥ
ƱؤƱǯ٤ǡʤΤޤ

O(0,0),C(5,0)Ȥ롣A,B裱ݸ¤ˤȤäơͳѷOABCȤ롣OA=a,AB=2,BC=3ǤȤ٥ȥOBȥ٥ȥACѤaѤɽ

졢ϳ٤򣲤ġʢAOBȢBCOʸǤƷ׻ΤǤäȴñˡϤޤǤ礦...
PowerBook 1123ڡ 1:15:07 MAIL:masaru-y@sansu.org HomePage:28737
Ȥ
30ʬ鿲Ƥޤޤbasicǰȯ!
ץǤˤǤ˻ǰǤ

FOR a=0 TO 9
FOR b=0 TO 9
IF ((b=a) OR (b=a+1) OR (a=b+1) OR (b=a+9) OR (a=b+9)) THEN GOTO 30
FOR c=0 TO 9
IF ((c=a) OR (c=b) OR (c=b+1) OR (b=c+1) OR (c=b+9) OR (b=c+9)) THEN GOTO 20
FOR d=0 TO 9
IF ((d=a) OR (d=b) OR (d=c) OR (d=c+1) OR (c=d+1) OR (d=c+9) OR (c=d+9)) THEN GOTO 10
LET x=1000*a+100*b+10*c+d
print x
10 NEXT d
20 NEXT c
30 NEXT b
40 NEXT a
END
˭ԡ 1123ڡ 1:18:15 MAIL:fttnm528@ybb.ne.jp 28738
Ȥ
#28736
>˿ؤ2000ǯΤΡˤꤷΤǤ
5֤(1)ȻפޤäƤ餹ߤޤ
ä餳ä񤷤Ȼפޤ

ȤĤ⻻ǤʤƤߤޤ󡣻Ȼ֤Τǡ
˭ԡ 1123ڡ 1:42:14 MAIL:fttnm528@ybb.ne.jp 28740
ޤ륱
Ϥ褦ޤ
ϡ֤Ver3ǻȤäץ򤤤äơޡ
ʣ̤ʤơǯ֤꤫ʤ
Ǥ⡢ΤǺīDz򤭤ʤޤ

#28736
> 10*7*6*5 + 10 *2*6 =2220
ࡢäѤ狼󡢡
Τϡݤ̵夲Ǥ

ɡ̤ߡ̤ᡡ̤ꡣ
ɡ̤ߡ̤ᡡ̤ꡣ
ڥ̤ߡ̤ᡡ̤ꡣ
ڥ̤ߣ̤ᣱ̤ꡣ
Х顡̤ߣ̤ᡡ̤ꡣ
ף̤ꡣ

ͼ٤ΥץϤʴ

require 'perm'

n = 0

perm((0..9).to_a, 4) do |a|
next if((a[0] - a[1]) == 1)
next if((a[1] - a[0]) == 1)
next if((a[1] - a[2]) == 1)
next if((a[2] - a[1]) == 1)
next if((a[2] - a[3]) == 1)
next if((a[3] - a[2]) == 1)
next if((a[0] - a[1]) == 9)
next if((a[1] - a[0]) == 9)
next if((a[1] - a[2]) == 9)
next if((a[2] - a[1]) == 9)
next if((a[2] - a[3]) == 9)
next if((a[3] - a[2]) == 9)
n += 1
end

p n

'perm'̥եΡǤФƥ졼Ǥ
1123ڡ 6:43:36 MAIL:take4310@mobile.email.ne.jp HomePage:ޤ륱28741
uchinyan
ϤˤϡǤ񤷤
Ĥˡǥȥ饤ΤǤפǽŪˤϥץǥåơפΤʬȤޤ
괺ˤɤ夤ˡǤ¤Ϻǽ˻פĤƻʲˡ

ޤǾ̤η塢ͷܡϲǤ⤤Τ 10 ̤ꡣ
ܤϡͷܤ³ƤϤʤʤΤǡ10 - 1 - 2 = 7 ̤ꡣθξǾʬȯޤ
Թ塢ͷܤ 0 ξͤޤͤơ 10 ܤOKǤ
ȡܤϡ10 - 2 - 2 = 6 ̤Ǥ
(1) ܤ 2 ξ
(1-a) ܤ 9 ξ
ܤϡ0 ϴ˻ȤƤΤ 10 - 3 - 1 = 6 ̤꤬ǽǤ
(1-b) ܤʳξ
ܤϡ10 - 3 - 2 = 5 ̤꤬ǽǤ
(2) ܤ 8 ξ
(2-a) ܤ 1 ξ
ܤϡ0 ϴ˻ȤƤΤ 10 - 3 - 1 = 6 ̤꤬ǽǤ
(2-b) ܤʳξ
ܤϡ10 - 3 - 2 = 5 ̤꤬ǽǤ
(3) ܤʳ3, 4, 5, 6, 7 ξ
(3-a) ܤ 1 9 ξ
ܤϡ0 ϴ˻ȤƤΤ 10 - 3 - 1 = 6 ̤꤬ǽǤ
(3-b) ܤʳξ
ܤϡ10 - 3 - 2 = 5 ̤꤬ǽǤ
Ǥ٤ƤǤäʬŤ餤ʡȻפޤɡ
10 * (2 * (1 * 6 + 5 * 5) + 5 * (2 * 6 + 4 * 5)) = 10 * (2 * 31 + 5 * 32) = 10 * 222 = 2220 ̤
ˤʤޤ
פϡܤǻͷܤϢ³ȡܤ롢ȤΤݥȤǤ͡

ʳβˡϡ㤤򤷤Ƥ褦ǹʤΤǤ⤦Ƥơޤäפޤ
ͥνȡ 1123ڡ 12:26:17 MAIL:uchi@sco.bekkoame.ne.jp 28742
uchinyan
¾βˡäȡȰפޤ (^^;
#28742βˡ(ˡ1)ȤƤޤ

(ˡ2)
ޤ0 9 ο³Ȥ߹碌ϡ
Ĥξ 01, 34 ʤɡĤξ 234, 789 ʤɡͤĤξ 1234, 7890 ʤɡ 10 ̤Ǥ
ơ٤Ƥβǽʻͷο abcd 0 9 ¤٤ФΤǡ10 * 9 * 8 * 7 = 5040 ̤ꡣ
ˡabcd ǿ³ϡab, bc, cd λս˿ϸ˸ơ
ʳϲǤ⤤Τǡ10 * 3 * 2 * 8 * 7 = 3360 ̤ꡣ
ˤϡ³硢ͤ³硢1287 Τ褦³ڥˤʤ礬ʣƤޤ
³ϡabc, bcd Ȥʤǡ³ĤĽʣƤޤ
ϡʬ 10 * 2 * 2 * 7 = 280 ̤ ʤΤǡޤ
ޤ³ڥˤʤ ab cd ⡢³ĤĽʣƤޤ
ϡab ֤ cd a, b ʤȤդơʬ 10 * 2 * 7 * 2 = 280 ̤ ǡޤ
٤ϡͤ³ abcd ³˻ĤäƤΤǤ
³Ĥġ³ڥˤʤǰĤäƤΤǡ껦Ƥޤ
ƤΤǡΰʬ 10 * 2 = 20 ̤­ޤ
äơɡİʾ³ϡ3360 - 280 - 280 + 20 = 2820 ̤ǡ
ΤϡΤơ5040 - 2820 = 2220 ̤ꡢˤʤޤ

(ˡ3)
ϡ(ˡ2)Ǥİʾ³򡢿Ĥ³ʤɤʬơ(ˡ1)˿ˡǤ
ݤʤΤǡ̤򼨤ޤ
Ρ10 * 9 * 8 * 7 = 5040
ͤ³硧10 * 2 = 20
Ĥ³硧10 * 2 * 2 * 6 = 240
Ĥ³硧
12xx 10 * 2 * (1 * 6 + 6 * 5) = 720
xx12 10 * 2 * (1 * 6 + 6 * 5) = 720
x12x 10 * 2 * (1 * 7 + 6 * 6) = 860
1278 10 * 2 * (1 * 1 + 6 * 2) = 260
ס720 + 720 + 860 + 260 = 2560
İʾ³硧2560 + 240 + 20 = 2820
硧5040 - 2820 = 2220 ̤

ĢäΤϤ줷Ǥˤ衢ޤꤦޤˡǤϤʤǤ͡
ͥνȡ 1123ڡ 13:59:08 MAIL:uchi@sco.bekkoame.ne.jp 28743
⡼ޥ
ä줿(^^;
09 ޤǤ߾ˤܤ0 ӡܤ08,07,06,05 Ȥǿ夲ޤ
08 ΤȤ32 ̤ꡣߤоꡢ2̤ꡣ
07 ΤȤ32̤ꡣ2̤ꡣ
06 ΤȤ31̤ꡣ2̤ꡣ
05 ΤȤ32̤ꡣ1̤ꡣ

ǽοϡ10̤ʤΤǡ
=10*(2*(32+32+31)+32)=2220

ޤˡϷǼĤٶޤ(^^)
1123ڡ 14:23:43 28744
uchinyan
ǼĤɤߤޤ

#28734
#28742βˡƱ
佽ѷ򤫤ơĺȤˣ򿶤äƹͤޡȤʤΤʤȤפޤ
ʤۤɡͤȤޤΤʡ

#28736
10*7*6*5 + 10 *2*6 =2220ȤΤꤷƤޤäƤϤäƲ򤭤ޤ(^^;
դࡣɤܤϥʥ֤ʷ׻äݤ顢ܤߥʤΤʡ
#28742βˡǻŦ
פϡܤǻͷܤϢ³ȡܤ롢ȤΤݥȤǤ͡
줽ΤΤΤ褦ʡ
ޤϡͤʤȡ餫ˡ10 * 7 * 6 * 5 ̤ꡣ
ܤǻͷܤϢ³ϡܤ 1 ̤ꤺޤ
Ƥ줬ǽʤΤϡmod 10 ǡ
ֻ = ͷ + 2 = ͷ - 1ϡֻ = ͷ - 2 = ͷ + 1פξ 2 ̤
= ʳ(10 - 1 - 2 - 2 = 5 ̤) ġ = ͷ + 1 or = ͷ - 1 ξ 5 * 2 ̤
ǡޤȤȡ10 * (2 + 2 * 5) = 10 * 2 * 6 ̤ꡣ
碌ơ10 * 7 * 6 * 5 + 10 * 2 * 6 ̤ꡣ
Ǥ⡢äȡƳФ줷
¿ʬäȤޤΤǤ礦 ^^;

#28738, #28741
ץࡣޤץȤдñǤ͡

#28741
׻ɤƤޤ󤬡夲ȤΤȡ#28743(ˡ3)΢֤Τ褦ʲˡʡ
ͥνȡ 1123ڡ 16:34:39 MAIL:uchi@sco.bekkoame.ne.jp 28745
uchinyan
#28744
βˡäơ
#28734
佽ѷ򤫤ơĺȤˣ򿶤äƹͤޡȤʤΤʤȤפޤ
ƱʤΤʡ
ͥνȡ 1123ڡ 14:52:06 MAIL:uchi@sco.bekkoame.ne.jp 28746
uchinyan
#28737
褯ʬޤ󤬡ʥ֤˷׻餳ʤˤʤޤ

٥ȥXX = vXX ʤɤȽ񤯤Ȥˤޤ
vOA = va, vOB = vb, vOC = vc ȤȡvAB = vb - va, vBC = vc - vb, vAC = vc - va ʤΤǡ
vABvAB = (vb - va)(vb - va) = vbvb - 2(vavb) + vava = vbvb - 2(vavb) + a^2
vBCvBC = (vc - vb)(vc - vb) = vcvc - 2(vcvb) + vbvb = 25 - 2(vcvb) + vbvb
ǡ
vABvAB = |vAB|^2 = AB^2 = 4
vBCvBC = |vBC|^2 = BC^2 = 9
ʤΤǡ
vbvb - 2(vavb) + a^2 = 4
25 - 2(vcvb) + vbvb = 9
μξդ
- 25 + 2(vcvb) - 2(vavb) + a^2 = - 5
2(vc - va)vb = 20 - a^2
(vc - va)vb = 10 - a^2/2
vc - va = vAC, vb = vOB äΤǡ
ACvOB = 10 - a^2/2

㤤ƤΤʡ

äȴñˡϤޤǤ礦...
ǡʤȤǡȤȤǤ礦
ͥνȡ 1123ڡ 16:25:43 MAIL:uchi@sco.bekkoame.ne.jp 28747
ޥ
#28747
ʤۤɡ̤ϢΩå˲򤯤ȤǽǤˡȷ׻̤ϤۤѤʤǤ͡

˿äǤ(1)ǡ⤵äȽ񤤤ƤΤǡ־Ĵ١Ūʴ֤ƤΤǡäȥ饯硼˲ˡΤǤϤʤȻפޤ....ޤm(__)m
PowerBook 1123ڡ 16:34:44 MAIL:masaru-y@sansu.org HomePage:28748
ϥ饮㡼ƥ
ץǤMATLABǤ
ߥФǤ
1123ڡ 16:48:58 HomePage:湩ؤĩ28749
uchinyan
#28748
ˡȷ׻̤ϤۤѤʤǤ͡
ޥ뤵βˡϤɤʴʤΤǤɸʡ

ʤΡ
10*7*6*5 + 10 *2*6 =2220ȤΤꤷƤޤäƤϤäƲ򤭤ޤ(^^;
⤴ĺȤ줷Ǥ m(__)m
ۤǤϡǼʤǤ礦 (^^;
ͥνȡ 1123ڡ 17:30:13 MAIL:uchi@sco.bekkoame.ne.jp 28750
ޥ
#28750
> ޥ뤵βˡϤɤʴʤΤǤɸʡ

ȡA(s,t),B(u,v)ȤơPˡȡAOB = BCO = ¤ʤɤȤơA(a cosa sin,B(5-cos¡sin¡ˤȤˡǤޤɤŻDz򤱤櫓ǤϤʤɡॺȤ櫓Ǥʤ..ȤǤ

>10*7*6*5 + 10 *2*6 =2220ȤΤꤷƤޤäƤϤäƲ򤭤ޤ(^^;
> ⤴ĺȤ줷Ǥ m(__)m

ŪˤUchinyanȤۤƱǤʲοABCDȤȡ

ȾϡAǻȤ10̤ꡢBAǻȤäȤξ٤Ҥ7̤ꡢCA,BǻȤäBξ٤Ҥ6̤ꡢƱͤˤD5̤פ10*7*6*5=2100ȤǤ

ȡ514(2,6,7,8,9,0)Τ褦ˡCAܤƤ硢DǻȤ5̤ǤϤʤ6̤ȤʤޤȤ櫓ǡΤ褦ʾϡȾη׻ǤϿȤ򤷤ƤΤǡο׻ΤȾǤ

ŪˤϡA10̤ꡢCAܤƤ2̤ꡢBA,CӤܤ6̤פȤơ10*2*6=120̤ȤƤޤ

ǡפ2220̤ꡢȤǹͤޤ
PowerBook 1123ڡ 20:11:59 MAIL:masaru-y@sansu.org HomePage:28751
⡼ޥ
#28746
10ѷǡ2ܤоͤȾʬäˤʤΤǤ礦顩ˤƤ錄ΤϿ夲Ǥ(^^;;

ιͤϴְäƤ褦ǺޤOrz

ꡧ17 ޤǤοʣ3¤٤Ȥ٤ꤢˤʤʤ褦ʾοϡ

⤤ͤ⤫Ф夲ޤ(^^;

2¤Ǥ硣6̤ꡣ
12ȡ21б
124
234
344
454
564
675
12ȡ21б
125
234
344
454
564
674
Ĥޤꡢ(25+25)*2=100
3Ϣ³ϡ52=10
ס110
ɡХλϡ7*6*5-110=210-110=100 ̤ꡣˤʤޤ

#28751 ޥ뤵ء

10*7*6*5 + 10 *2*6 =2220ȤΤꤷƤޤäƤϤäƲ򤭤ޤ(^^;

ۤξ狼ä褦ʡ
10*7*6*5 ϡǽομξ٤ޤǤʤǡ
10*2*6 ϡǽομˤξ٤οޤʤǤ礦ɡ
ޤԥȤƤޤ󡦡(^^;;

ȡƤ褦Ȥ顢ޥ뤵β
>ŪˤϡA10̤ꡢCAܤƤ2̤ꡢBA,CӤܤ6̤פȤơ10*2*6=120̤ȤƤޤ

D ΤȤϹͤʤƤΤʡ
ޤòƤޤ(^^;

1124ʶ 17:50:54 28752
uchinyan
#28751
⤢꤬Ȥޤ

䤨ȡA(s,t),B(u,v)ȤơPˡȡAOB = BCO = ¤ʤɤȤơA(a cosa sin,B(5-cos¡sin¡ˤȤˡǤ
ƤˡƱ褦ǤΤˤФǤȤϰϤǤ͡

ϡΤˡ#28742#28745ȹͤƱ褦Ǥ
ͥνȡ 1123ڡ 21:15:27 MAIL:uchi@sco.bekkoame.ne.jp 28753
uchinyan
#28752
⤢꤬Ȥޤ

դࡣѷˤƤ⡢ޤȤǤϤΤΡޤñˤϤʤʤ褦Ǥ͡

D ΤȤϹͤʤƤΤʡ
D ϡ#28745Ρְܡפޤޥ뤵ϡD 1 ̤ɲäͤƤꡢ 1 ̤Ǥ
ͥνȡ 1123ڡ 21:33:13 MAIL:uchi@sco.bekkoame.ne.jp 28754

600̤μʤʤΥʤä||
ӥå 1124ʶ 6:26:42 HomePage:θ28755
25no12
ͷοabcdȤơabcdν˿ʤǤ᡼ǡ˿ʤȤ٤Τ09ΤʬȤξ٤7̤ꡣ
09ٹäƤ뤫ǽοǤbcd٤Ȥ߹碌οƱ
Ȥϡξ٤ɬפäơcaξ٤ξd7-1=6̤ˤȤǤʤd7-2=5̤ˤǾʬǤơ­10ܤƤǤꡢäƴDz򤤤Ƥߤޤ

10x(1x(5x5+1x6)+1x(5x5+1x6)+5x(4x5+2x6))=2,220

ƻǤ͡(^-^;
ޥ뤵βޡȡǤ
1124ʶ 18:20:34 28756
uchinyan
#28752
ιͤϴְäƤ褦ǺޤOrz
¤ϡΤͤǤη׻äƤߤޤñǤϤʤΤǤΤ褦ˤʤ褦Ǥ
ѷĺȿײ 0 9 ο򿶤ޤ
դͷο abcd Ȥޤ
a ϲǤ⤤Τ 10 ̤ꡣʲa 0 ˸ꤷƹͤη̤ 10 ܤޤ
c = 1, 9 Ȥʤ
ѷǤϡc a κɤ餫٤Ǥ
c = 1 ξ c = 9 ξϡоƱǤ
ޤˤߤʤͤȡb a, c ٤ˤʤΤ 6 ̤ꡣ
d ϡc ζƤ٤ʤʤΤǡ b Ф 6 ̤ꤺĤޤ
ǡ2 * 6 * 6 = 72 ̤ꡣ
d = 1, 9 Ȥʤ
ѷǤϡd a κɤ餫٤Ǥ
d = 1 ξ d = 9 ξϡоƱǤ
c = 9, 1 Ȥʤϴ˿ƤΤǽޤ
ۤɤƱͤ˹ͤФΤǤ٤ϾʬȯޤñǤϤʤޤˤߤʤȡ
2 * (1 * 5 + 1 * 4 + 4 * 3 + 1 * 4) = 2 * 25 = 50 ̤ꡣ
ʳξ
c, d a ٤ʤǡb a ٤ʤΤǡ#28752
ꡧ17 ޤǤοʣ3¤٤Ȥ٤ꤢˤʤʤ褦ʾοϡ
ˤʤޤäȤ⡢޳ѤνѷοޤʤΤǸ b, c, d = 2 8 ǿޤ򸫤ʤͤޤ
⤢ޤꤦޤˡפĤɡޤˤߤʤƻ˿Ȥ
b = 2, 8 : 2 * (4 * 3 + 1 * 4) = 32 ̤
b = 3, 7 : 2 * (3 * 3 + 1 * 4) = 26 ̤
b = 4, 5, 6 : 3 * (2 * 3 + 2 * 4) = 42 ̤
ɡ32 + 26 + 42 = 100 ̤ꡣ
ϡ⡼ޥ󤵤η̤ȰפƤ褦Ǥ
ʾǡʬϤ٤ƤǤɡΤϡ
10 * (72 + 50 + 100) = 10 * 222 = 2220 ̤
ˤʤޤ
ϽФΤΡʤȤ⤳ιͤǤϡäݤǤ

ʤޤβˡͤƤߤޤϤꤤޤҤȤĤʡ
ݥȤϡޥ뤵ιͤ or #28742βˡǻŦȤǤ
̲ϴñǤϤʤʤΤǡ̼ǤϤʤͷޤǤñʤ夲Ǥ
׻̤񤤤Ƥޤ
n 塢 n = 1, 2, 3, 4 ξϢ³ĤǤ٤礦ο f(n)Ĥ٤ʤο g(n) Ȥȡ
f(1) = 0
g(1) = 10
f(2) = f(1) * 9 + g(1) * 2 = 0 * 9 + 10 * 2 = 0 + 20 = 20
g(2) = 10 * 9 - f(2) = 90 - 20 = 70
f(3) = f(2) * 8 + g(2) * 2 = 20 * 8 + 70 * 2 = 160 + 140 = 300
g(3) = 10 * 9 * 8 - f(3) = 720 - 300 = 420
f(4) = f(3) * 7 + g(3) * 2 - 10 * (1 * 1 + 1 * 1 + 5 * 2) = 300 * 7 + 420 * 2 - 10 * 12 = 2100 + 840 - 120 = 2820
g(4) = 10 * 9 * 8 * 7 - f(4) = 5040 - 2820 = 2220
Ȥʤꡢ 2220 ̤ˤʤޤ
ʤf(4) 10 * (1 * 1 + 1 * 1 + 5 * 2) Ȥǽ˽Ҥ٤ݥȤʬǤ
ͥνȡ 1125ڡ 0:01:03 MAIL:uchi@sco.bekkoame.ne.jp 28757
⡼ޥ
#28757
uchinyanOrZ
äѤñ㤢ʤäǤ(^^;

10,70,420,2220, ο󥵥ȤˤϺܤäƤʤ褦Ǥ
17 Ρ234¤٤Хˤʤο򤢤ȤǥåƤߤޤ

2¤٤7*6-6*2=30
3¤٤100
4¤٤桦(^^;
5ġޤͤƤ⤤ޤ
6ġƱ
7ĤξǽʤǤ͡ޤäͤƤߤ뤳Ȥˤޤ

7Ĥ٤ƥХλξοޡ
ǡn Ĥ٤ƥХΤȤͤƤߤ뤳Ȥˤޤ

3İʲǤϥХˤʤʤ
f(4)=22413,3142
f(5)=4*2+6*3=26
f(6)=100夲ʤΤǼʤ
ˤʤ褦

2,26,100 ǡΥȥȡ
2, 26, 100, 302, 762, 1790, 3848, ȤΤĤޤ
f(7)=302 ʤ
1125ڡ 19:26:49 28758
uchinyan
#28758
ѤäΤǡݤʤǤץĴ٤Ƥߤޤ

17 Ρ234¤٤Хˤʤο򤢤ȤǥåƤߤޤ
2¤٤7*6-6*2=30
3¤٤100
4¤٤桦(^^;
5ġޤͤƤ⤤ޤ
6ġƱ
7ĤξǽʤǤ͡ޤäͤƤߤ뤳Ȥˤޤ
30, 100, 272, 582, 860, 646
Ȥʤ褦Ǥ

ǡn Ĥ٤ƥХΤȤͤƤߤ뤳Ȥˤޤ
3İʲǤϥХˤʤʤ
f(4)=22413,3142
f(5)=4*2+6*3=26
f(6)=100夲ʤΤǼʤ
ˤʤ褦
f(0) = 1 Ƥơ
1, 1, 0, 0, 2, 14, 90, 646, 5242, 47622, 479306, ...
Ȥʤ褦Ǥf(5) ʹߤפʤΤˤʤΤǤ
ϡο󥵥Ȥˡid:A002464 ȤƤ褦Ǥ
http://www.research.att.com/~njas/sequences/A002464
A002464
Hertzsprung's problem: ways to arrange n non-attacking kings on an n X n board, with 1 in each row and column.
Also number of permutations of length n without rising or falling successions.
A002464Hertzsprung(إĥץ󥰡)ꡧ
n X n ׾ˡƹԵڤӳ˰Ĥġn Ĥι⤷ơƤʤ󥰤¤٤ˡ
ϸϢ³()⤿ʤĹ n νθĿǤ⤢롣
ͥνȡ 1126 14:06:11 MAIL:uchi@sco.bekkoame.ne.jp 28761
⡼ޥ
#28759
uchinyanءǧޤǤƤ̻ˤǤ
꤬ȤޤOrZ
ץΰϤǤ͡ʤɤ7Ĥξ礬646 ȰפƤ褦

ˤƤf(5) Ǵְä㤢Ǥ͡
f(5)
13524,14253,
24135,24153,25314
35142,35241,31425,31524
41352,42513,42531
52413,53142
14̤Ǥ(^^;

3ǻϤޤȤޤǹͤСʺǸοεդΤΤʬ뤫ˤ櫓Ǥ
Ȥɤ n ξǤ⡢оΤʤϤ顢n/2 (n) (n-1)/2 (n ) ޤǹͤФ櫓ºݤˤ϶ŪʿʺǽȺǸοˤФʤȥǤɡ
1126 22:22:21 28762
⡼ޥ
ͧ䡣ʤä餪夬겼(^^)


ǿ򽽿ˡɽƷοɤΤ褦¤ؤƤ⡢
줿ƤǿǤȤǿǿȤ
Ȥˤ롣ǿ򽽿ɽȤ4İʾ
ʤƷ˸ʤȤ衣
1127ʷ 13:16:58 28763
uchinyan
#28763
äťǤ

(ɲ)
äꤷƤޤʲκǸʬ
ǡǿϡ1, 3, 7, 9 3 İʲοǹ뤫 2 5ˤʤޤ
⤷ޤ
פǿβǤʲǤϡξͤƤޤǤ
äơʲεϡʾξȤͤ
ˤ衢ܼϤξʤΤǡäѹϤޤ
(ɲý)

n ǿǤ뤿ˤϡγƷοϡ1, 3, 7, 9 ǤʤФʤޤ
ϡ0, 2, 4, 5, 6, 8 ˤϡ餬褿ˤǿˤʤʤȤ餫Ǥ
ơn 1, 3, 7, 9 򾯤ʤȤĤĴޤǤȤޤ
줬ǿǤȤȡ¤ؤΤ褦 abcdxyzu ٤ǿǤϤǤ
abcd ϡ1, 3, 7, 9 ¤٤ΡޤޤʤäƤ褤 ¸ߤʤ Ȥޤ
13311997, 1133777, 99111, 3333 ʤɡϤ⤽ n ϻͷοǤʬ¸ߤʤȤȤǤ
xyzu 1, 3, 7, 9 ¤٤ΡĤޤꡢ1, 3, 7, 9 ν󡢤Ȥޤ
1, 3, 7, 9 ϾʤȤĤĤȤΤǡϲǽǤ
ȡmod 7 ǡ
1379 0, 1397 4, 1739 3, 1793 1, 1937 5, 1973 6,
3179 1, 3197 5, 3719 2, 3791 4, 3917 4, 3971 2,
7139 6, 7193 4, 7319 4, 7391 6, 7913 3, 7931 0,
9137 2, 9173 3, 9317 0, 9371 5, 9713 4, 9731 1
Ĥޤꡢxyzu ϡ7 dzä;򤹤٤ɽǤޤǡ
abcdxyzu abcd0000 + xyzu
ʤΤǡabcd0000 7 dzä;Ф xyzu 򤦤ޤСɬabcdxyzu 7 ܿˤ뤳ȤǤޤ
ϡabcdxyzu ٤ǿǤäȤ̷⤷ޤ
ǡǿϡ1, 3, 7, 9 3 İʲοǹ뤳Ȥˤʤޤ
ͥνȡ 1129ʿ 7:47:01 MAIL:uchi@sco.bekkoame.ne.jp 28764
⡼ޥ
#28764
uchinyan򡪡
ťʤäơޡȤȻפޤ(^^)
ͧͤȤƽꤵޤǤ
ʤߤˤ錄ϡ줳ť¤ˤϤޤäƤ⤬Ƥޤ(^^;
1128ʲС 0:38:47 28765