OFFSET
0,5
LINKS
Vaclav Kotesovec, Table of n, a(n) for n = 0..10000
FORMULA
a(n) ~ c * n * 2^(n/4), where
c = 37.4093119651465404809069752821426852731608123... if mod(n,4)=0
c = 37.6275180026872367633343656570058911570800766... if mod(n,4)=1
c = 37.7650387085085950514850376086515488784106690... if mod(n,4)=2
c = 37.4702467422193571732026074780460498930830447... if mod(n,4)=3
MATHEMATICA
nmax = 100; CoefficientList[Series[Product[1/(1 - k*x^(k^2))^k, {k, 1, nmax}], {x, 0, nmax}], x]
CROSSREFS
KEYWORD
nonn
AUTHOR
Vaclav Kotesovec, Apr 15 2017
STATUS
approved