OFFSET
0,3
COMMENTS
See A374848 for the definition of obverse convolution and a guide to related sequences.
FORMULA
a(n) ~ exp(5/6 - 3*n - 4*Pi*n^(1/3)/3^(3/2) + 2*Pi*n^(2/3)/sqrt(3)) * n^(3*n + 17/6). - Vaclav Kotesovec, Sep 13 2024
MATHEMATICA
s[n_] := n^2; t[n_] := n^3;
u[n_] := Product[s[k] + t[n - k], {k, 0, n}]
Table[u[n], {n, 0, 20}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Sep 13 2024
STATUS
approved