OFFSET
0,3
LINKS
Seiichi Manyama, Table of n, a(n) for n = 0..444
FORMULA
a(n) ~ (5*Pi^2/3 - 4*log(2)^2)^(1/4) * n^(n - 1/4) / (4*exp(n - sqrt((5*Pi^2/12 - log(2)^2)*n))). - Vaclav Kotesovec, Oct 07 2024
MATHEMATICA
nmax = 25; CoefficientList[Series[1/Product[1 - x^k + x^(2*k)/2, {k, 1, nmax}], {x, 0, nmax}], x] * Range[0, nmax]! (* Vaclav Kotesovec, Oct 05 2017 *)
PROG
(PARI) my(x = 'x + O('x^40)); Vec(serlaplace(prod(m=1, 40, 1/(1 - x^m + x^(2*m)/2!)))) \\ Michel Marcus, Oct 05 2017
CROSSREFS
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Oct 05 2017
STATUS
approved