A030898 a(n) = floor(exp(2/17)*n!).

1, 2, 6, 26, 134, 809, 5669, 45353, 408184, 4081844, 44900294, 538803530, 7004445892, 98062242500, 1470933637503, 23534938200055, 400093949400940, 7201691089216926, 136832130695121608, 2736642613902432167

Offset

1,2

Links

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

Mathematica

With[{c=Exp[2/17]}, Floor[c*Range[20]!]] (* Harvey P. Dale, Dec 15 2013 *)

Prog

(Magma) [Floor(Exp(2/17)*Factorial(n)) : n in [1..25]]; // Wesley Ivan Hurt, Sep 25 2023

Crossrefs

Sequence in context: A370215 A326562 A030957 * A002788 A332796 A134094

Adjacent sequences: A030895 A030896 A030897 * A030899 A030900 A030901

Keyword

nonn

Author

Simon Plouffe

Status

approved