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A002605 a(n)=2(a(n-1)+a(n-2)), a(0)=0, a(1)=1. +0
71
0, 1, 2, 6, 16, 44, 120, 328, 896, 2448, 6688, 18272, 49920, 136384, 372608, 1017984, 2781184, 7598336, 20759040, 56714752, 154947584, 423324672, 1156544512, 3159738368, 8632565760, 23584608256, 64434348032, 176037912576, 480944521216, 1313964867584 (list; graph; listen)
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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.


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