OFFSET
0,4
LINKS
Vaclav Kotesovec, Table of n, a(n) for n = 0..9850
FORMULA
a(n) ~ c * 2^(n/3), where
c = 2684.3207660224428945778151546260301591494083790... if mod(n,3) = 0
c = 2683.9203893332021512699407898064547843826991184... if mod(n,3) = 1
c = 2683.7635451650373491773203224442103370428384569... if mod(n,3) = 2.
MATHEMATICA
nmax=60; CoefficientList[Series[Product[1/(1-k*(x^(2*k-1))), {k, 1, nmax}], {x, 0, nmax}], x]
CROSSREFS
KEYWORD
nonn
AUTHOR
Vaclav Kotesovec, Dec 21 2015
STATUS
approved