CRYING DOLPHIN
ï⤤ʤԳϡ 130ڡ 0:07:30 HomePage:֥⤢41353
Ĺ
ǽԤää꤫Ȼפä顢ȤȽ񤤤ƤäΤǡ
ƻοΣܤǷ׻ޤ
Ϥޤޤġ 130ڡ 0:08:02 HomePage:åλؤ41354
abcba@baLLjugglermoka
Nܤξϡ2^(N+1)-4̤
130ڡ 0:10:33 41355
ߤ
ʬƣʬʤΤǡܤޤǤλᣴʬܤޤǤλᣴߣᣱʬ
Ʊͤ
ܤޤǢߣᣲ
ܤޤǢߣ᣶
ܤޤǢߣᣱ
ܤޤǢߣᣲ

ܤޤǤΰ̹
ߡʣʣݣˡݣ
ȤȤˤʤΤǤ礦
130ڡ 0:15:16 41357
pao
פĤ
ƻο2
ޤ
ʳŪ 4
Ҥ2+4򷫤֤Ǥ
130ڡ 0:15:55 41358
ǯ
ƻɬȤȤǤ
2+4+8+16+32+642
130ڡ 0:15:58 41359
⡼ޥ
פ⤫Ф^^;...
f(2)=4
f(3)=2f(2)+4=12
f(4)=2f(3)+4=28
f(5)=2f(4)+4=60
f(6)=2f(5)+4=124
f(7)=2f(6)+4=252
130ڡ 0:16:18 41360

Ⱦʬͤ2

2,6,14,30,62,126
ä7ܤΤȤ
1262252
Tokusima 130ڡ 0:18:03 HomePage:41361
pao
פĤ
ƻο2
ޤ
ʳŪ 4
Ҥ2+4򷫤֤Ǥ
130ڡ 0:18:32 41362
fumio
Фϡ
ȴ֤̾Ǥ
ۤɤܤäȤޤϤϤϡǤϤǤϡ
130ڡ 0:19:46 41363
kurokori
狼䤹ޤäǡ˿ޤդοߣȤ狼ޤ
2+4+8+16+32+64=128-1-1=126ʤΤǡ1262=252Ǥ
ƲȤǤں߻֤1ʬȤȡ꤬ʣˤʤޤ͡
130ڡ 0:22:54 41364
kurokori
ƲȤǤں߻֤1ʬȤȡAȤǤںߤϹͤʤˡ
2ܡ6ܤޤǤϤ줾3󤺤ġ7ܤϤ줾1ںߤ뤳ȤˤʤΤǡ
ں߻֤ιפ(2+4+8+16+32)3+64=250
˰ư֤252­ơ502ʬȤǤ礦
130ڡ 0:26:21 41365

ƻοʣˡᣱǤɤƻʬǣߣᣲȽФޤ
Ϣ³ƣʿߤǤ͡
ΡοʿߤǤäΤȴΤϡʤɤؤʡˡ֣οʿɬʿˤʤ뤳ȤʤפȤǤ
130ڡ 0:40:30 41366
ǯ
ɤΰ֤βȤ饹ȤƤ⡢βȤ˵ΤǤСƱ֤ˤʤΤʡ
λʬܤȤơȹ礻ȹͤСǤǤ͡
130ڡ 1:17:11 41367

#41365

ں߻1ʬξ硢
ȯȤ̤ȤAȤΩޤ
1ʬȤƥȤ503ʬ
nʤǰ̲2^(n+2)-9Ȥʤޤ(n=2, 3, )
130ڡ 0:50:53 41368
kurokori
#41368
ǤAȤΩΤǡ򤢤碌503Ǥ͡
äΤۤҤääƻäݤʡ
130ڡ 0:56:23 41369
ϥ饮㡼ƥ
4*(2^n-1)ǵޤǤ֤ƻ䤷ƤäƵ§Ѥޤ
130ڡ 9:12:21 HomePage:湩ؤ˥41370
Mr.ǥ
̼ޤơۤȤɤƱ褦ˤʤޤ
130ڡ 10:51:36 41371
persona
äݤϤʤǤɡʤʤ̣ΤǤ
130ڡ 11:56:03 41372
uchinyan
Ϥˤϡơϡ
ϴñǤ¿ʬ⡣ʴǡ

ηξϰܤλޤββȤ򤹤٤ˬ䤷ƤäƼλޤ˹ԤΤûʤΤǡ
ޤαˤ 1 ʬ * 2 = 2 ʬ ˡޤܿ 2 + 4 + 8 + 16 + 32 + 64 = 126 ݤФ褯
2 * 126 = 252 ʬ
ˤʤޤ
ͥνȡ 130ڡ 12:05:11 MAIL:uchi@sco.bekkoame.ne.jp 41373
uchinyan
ǼĤɤߤޤ

#41354#41358#41359#41364#41366#41373
2 ʬ * ޤܿȹͤˡ

#41357#41370
4 ʬ * οȹͤˡ

#41358#41360#41361
˹ͤˡܺ٤ˤϼ㴳ΥХꥨ󤬤褦Ǥ

ʤn ʤΰ̲ϡΤäȤꡤ2^(n+1) - 4Ǥ͡

ȡȤǤں߻֤ 1 ʬȤĥϡդޤʵޤ

ˬ줿Ȥˤɬںߤϡ#41368Ʊǡ
(2^(n+1) - 4) + (2^n - 2) + (2^(n-1) - 2) * 2 + 1 = 2^(n+2) - 9

ˬ줿Ȥˤںߤʤ硤ĿŪˤϤʵ롤ϡ
(2^(n+1) - 4) + (2^n - 2) = 3 * 2^n - 6

Ȼפޤ
ͥνȡ 130ڡ 14:49:08 41374

#41370
ϥ饮㡼ƥƱǤ
22 1:56:45 41375
粬ҹ
ܤ飲ܤޤǤͤƣ̤ꡣĤλȤȣܤǻġοƤΤǡʣ

äơʣݣˡ

Ǥ˽񤭹ߤƤ⤪뤫Τޤ͡ʡ
24ʲС 8:48:11 41376

ޤ͡
ȯΤ⡩
ӥå 26ڡ 0:08:36 41377