A374874 Obverse convolution (2^n)**(n!); see Comments.

2, 6, 45, 1260, 183600, 176490600, 1331315425440, 90579563457377280, 62660380648301551779840, 490943560922866363260804710400, 47971283739623513755756038396090777600, 63754384387913077858449560360392597458596659200

Offset: 0

Author

Clark Kimberling, Sep 11 2024

Keywords

• nonn

Comments

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

Crossrefs

Cf. A000079, A000142, A374848.

Programs

Mathematica

s[n_] := 2^n; t[n_] := n!;
u[n_] := Product[s[k] + t[n - k], {k, 0, n}]
Table[u[n], {n, 0, 13}]