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A046106 G.f.: g.f. for A001411 / g.f. for A004018. 0

%I #4 Mar 30 2012 16:48:22

%S 1,0,8,4,48,68,284,684,1816,5608,12684,42068,92916,304100,688988,

%T 2170020,5088784,15436172,37281880,109786204,271062388,781016892,

%U 1958863988,5555714820,14090644980,39503105472,101000072900,280693435596

%N G.f.: g.f. for A001411 / g.f. for A004018.

%e 1 + 4*q + 12*q^2 + 36*q^3 + 100*q^4 + 284*q^5 + 780*q^6 + 2172*q^7 + 5916*q^8 + 16268*q^9 + ... / 1 + 4*q + 4*q^2 + 4*q^4 + 8*q^5 + 4*q^8 + 4*q^9 + ... = 1 + 8*q^2 + 4*q^3 + 48*q^4 + 68*q^5 + 284*q^6 + 684*q^7 + 1816*q^8 + 5608*q^9 + ...

%Y Cf. A001411, A004018.

%K nonn

%O 0,3

%A _N. J. A. Sloane_, based on a suggestion of Maurice Craig (Maurice.D.Craig(AT)BHPBilliton.com), May 11 2003

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Last modified March 29 02:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)