OFFSET
0,3
LINKS
Seiichi Manyama, Table of n, a(n) for n = 0..10000
FORMULA
G.f.: (Sum_{k>=0} x^(k*(k+1)/2)) * (Sum_{k>=0} x^(k^2)) * (Sum_{k>=0} x^((2*k+1)^2)).
EXAMPLE
CROSSREFS
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Jul 07 2024
STATUS
approved