A294531 E.g.f.: 1/Product_{k>0} (1-x^(2*k-1)/(2*k-1)!).

1, 1, 2, 7, 28, 141, 866, 6063, 48560, 438721, 4387582, 48272643, 579642328, 7535456657, 105499762356, 1582665820557, 25322712724800, 430488412249937, 7748929638924950, 147229720951176075, 2944597048114831688, 61836721841638907121, 1360407969674984670156

Offset: 0

Author

Seiichi Manyama, Nov 02 2017

Keywords

• nonn

Links

• Robert Israel, Table of n, a(n) for n = 0..449

Crossrefs

Cf. A005651, A032310.

Programs

Maple

N:= 40:
S:= series(1/mul(1-x^j/j!,j=1..N,2),x,N+1):
seq(coeff(S,x,n)*n!,n=0..N); # Robert Israel, Nov 23 2017

Mathematica

nmax = 30; CoefficientList[Series[1/Product[(1-x^(2*k-1)/(2*k-1)!), {k, 1, nmax}], {x, 0, nmax}], x] * Range[0, nmax]! (* Vaclav Kotesovec, Nov 02 2017 *)