OFFSET
0,3
COMMENTS
See A374848 for the definition of obverse convolution and a guide to related sequences.
If k>=0, then a(2k+1) is a square.
FORMULA
a(n) ~ 3^(3*n) * n^(n+1) / (2^(3*n) * exp(n)). - Vaclav Kotesovec, Sep 13 2024
MATHEMATICA
s[n_] := n; t[n_] := Floor[3 n/2];
u[n_] := Product[s[k] + t[n - k], {k, 0, n}]
Table[u[n], {n, 0, 24}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Sep 13 2024
STATUS
approved