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Inverse Euler transform of A008408.
1

%I #23 Jun 15 2018 08:48:01

%S 0,196560,16773120,-18919981080,-3292295086080,2312547886368720,

%T 640457437563740160,-302667453389051314200,-123005476312830648176640,

%U 39529719620247267255853008,23306082528463942764630528000,-4849033309391159571741461446680

%N Inverse Euler transform of A008408.

%C a(n) is a multiple of 24.

%H Seiichi Manyama, <a href="/A305920/b305920.txt">Table of n, a(n) for n = 1..377</a>

%H N. J. A. Sloane, <a href="/transforms.txt">Transforms</a>

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/LeechLattice.html">Leech Lattice</a>

%e 1 + 196560*q^2 + 16773120*q^3 + 398034000*q^4 + ... = (1-q^2)^(-196560) * (1-q^3)^(-16773120) * (1-q^4)^18919981080 * ... .

%Y Cf. A008408, A108093.

%K sign

%O 1,2

%A _Seiichi Manyama_, Jun 14 2018