OFFSET
0,50
COMMENTS
The difference between the number of partitions of n into an even number of squares > 1 and the number of partitions of n into an odd number of squares > 1.
LINKS
FORMULA
G.f.: Product_{k>=2} 1/(1 + x^(k^2)).
MATHEMATICA
nmax = 82; CoefficientList[Series[Product[1/(1 + x^k^2), {k, 2, Floor[Sqrt[nmax]] + 1}], {x, 0, nmax}], x]
CROSSREFS
KEYWORD
sign
AUTHOR
Ilya Gutkovskiy, Jan 22 2018
STATUS
approved