OFFSET
1,2
LINKS
Robert Price, Table of n, a(n) for n = 1..1000
FORMULA
a(n) ~ exp(Pi*sqrt(n/6)) * Gamma(1/4) * Gamma(1/8) * 3^(1/16) / (8 * 2^(11/16) * Pi^(13/8) * n^(7/16)). - Vaclav Kotesovec, Aug 26 2015
MATHEMATICA
nmax = 100; Rest[CoefficientList[Series[Product[1/((1 - x^(8k+1))*(1 - x^(8k+2))), {k, 0, nmax}], {x, 0, nmax}], x]] (* Vaclav Kotesovec, Aug 26 2015 *)
nmax = 60; kmax = nmax/8;
s = Flatten[{Range[0, kmax]*8 + 1}~Join~{Range[0, kmax]*8 + 2}];
Table[Count[IntegerPartitions@n, x_ /; SubsetQ[s, x]], {n, 1, nmax}] (* Robert Price, Aug 03 2020 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved