A030913 [ exp(4/15)*n! ].

1, 2, 7, 31, 156, 940, 6580, 52642, 473778, 4737780, 52115580, 625386966, 8130030563, 113820427882, 1707306418237, 27316902691801, 464387345760618, 8358972223691130, 158820472250131476, 3176409445002629538

Offset

1,2

Links

Table of n, a(n) for n=1..20.

Mathematica

Floor[Exp[4/15]Range[30]!] (* Harvey P. Dale, Aug 22 2020 *)

Crossrefs

Sequence in context: A302061 A030823 A030873 * A181066 A325452 A030945

Adjacent sequences: A030910 A030911 A030912 * A030914 A030915 A030916

Keyword

nonn

Author

Simon Plouffe

Status

approved