A374887 Obverse convolution (n^2)**(2^n); see Comments.

1, 4, 60, 2400, 215424, 39716352, 14347238400, 9902131200000, 12892284695347200, 31492802074536050688, 144165936575856535142400, 1238327694920559152332800000, 20010804298085003878056591360000, 610343933792029827481169622466560000

Offset

0,2

Comments

See A374848 for the definition of obverse convolution and a guide to related sequences.

Links

Table of n, a(n) for n=0..13.

Mathematica

s[n_] := n^2; t[n_] := 2^n;
u[n_] := Product[s[k] + t[n - k], {k, 0, n}]
Table[u[n], {n, 0, 20}]

Crossrefs

Cf. A000290, A000079, A374848.

Sequence in context: A322450 A099705 A012488 * A181444 A177780 A012567

Adjacent sequences: A374884 A374885 A374886 * A374888 A374889 A374890

Keyword

nonn

Author

Clark Kimberling, Sep 13 2024

Status

approved