OFFSET
0,10
COMMENTS
LINKS
Vaclav Kotesovec, Table of n, a(n) for n = 0..10000
FORMULA
a(n) ~ exp(2*Pi*sqrt(n/21)) / (4 * 21^(1/4) * cos(3*Pi/14) * n^(3/4)) * (1 + (11*Pi/(84*sqrt(21)) - 3*sqrt(21)/(16*Pi)) / sqrt(n)). - Vaclav Kotesovec, Aug 26 2015, extended Jan 24 2017
MATHEMATICA
nmax = 100; CoefficientList[Series[Product[1/((1 - x^(7k+2))*(1 - x^(7k+5))), {k, 0, nmax}], {x, 0, nmax}], x] (* Vaclav Kotesovec, Aug 26 2015 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
EXTENSIONS
Prepended a(0)=1 from Vaclav Kotesovec, Jan 23 2017
STATUS
approved