az1001 发表于 2015-7-19 19:23:46

水贴

1 2 3 5 8 13 21 34 55 89 144 233 377 610 987 1597 2584
4181

RPGTaomeeKL° 发表于 2015-7-19 19:56:54

哦！这不是文皮那韧数列吗！

sasl 发表于 2015-7-19 20:58:14

(1+1)*2+(5+3)*2+(13+21)*2+(55+89)*2+(233+377)*2+(987+1597)*2+(4181+6575)
=2*2+8*2+34*2+144*2+610*2+2584*2+10756
=(2+8+34+144+610+2584)*2+10756
=3382*2+10756
=6764+10756
=17520

1240181932 发表于 2015-7-20 09:23:34

不愧是水贴
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