A030870 a(n) = floor(exp(8/19)*n!).

1, 1, 3, 9, 36, 182, 1096, 7678, 61430, 552871, 5528710, 60815817, 729789815, 9487267606, 132821746496, 1992326197440, 31877219159043, 541912725703747, 9754429062667447, 185334152190681505, 3706683043813630117, 77840343920086232475, 1712487566241897114452

Offset

0,3

Links

Table of n, a(n) for n=0..22.

Mathematica

Floor[Exp[8/19]Range[30]!] (* Harvey P. Dale, Jul 08 2023 *)

Crossrefs

Sequence in context: A370166 A030893 A030936 * A030965 A352645 A245154

Adjacent sequences: A030867 A030868 A030869 * A030871 A030872 A030873

Keyword

nonn

Author

Simon Plouffe

Extensions

a(0)=1 prepended by Alois P. Heinz, Jul 09 2023

Status

approved