A374859 Obverse convolution (n)**(2^n); see Comments.

1, 4, 36, 640, 21600, 1370880, 163924992, 37150064640, 16065713664000, 13343315521536000, 21404225432753602560, 66631099907380661452800, 404128087449517604339712000, 4791300434691082493755392000000, 111343541043408070030243833839616000

Offset: 0

Author

Clark Kimberling, Aug 18 2024

Keywords

• nonn

Comments

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

Crossrefs

Cf. A000027, A000079, A374848.

Programs

Mathematica

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