OFFSET
0,2
FORMULA
a(n) ~ erfc(Pi/(4*sqrt(3))) * 2^(2*n - 3) * exp(Pi*sqrt(n/3) + Pi^2/48) / (3^(1/4) * n^(3/4)).
MATHEMATICA
Table[Sum[Binomial[2*n, k] * PartitionsQ[k], {k, 0, n}], {n, 0, 30}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Vaclav Kotesovec, Aug 01 2022
STATUS
approved