OFFSET
0,11
FORMULA
a(n) = [x^1] Product_{k=1..n} (x^(k^3) + 1/x^(k^3)).
MATHEMATICA
Table[Coefficient[Product[(x^(k^3) + 1/x^(k^3)), {k, 1, n}], x, 1], {n, 0, 50}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Ilya Gutkovskiy, Jan 30 2024
STATUS
approved