A030911 a(n) = floor(exp(8/15)*n!).

1, 3, 10, 40, 204, 1227, 8591, 68729, 618567, 6185670, 68042371, 816508457, 10614609952, 148604539330, 2229068089950, 35665089439210, 606306520466578, 10913517368398413, 207356829999569855, 4147136599991397105

Offset

1,2

Links

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

Mathematica

Floor[Exp[8/15] Range[20]!] (* Wesley Ivan Hurt, May 25 2024 *)

Crossrefs

Sequence in context: A030845 A030868 A030891 * A009374 A297213 A216386

Adjacent sequences: A030908 A030909 A030910 * A030912 A030913 A030914

Keyword

nonn

Author

Simon Plouffe

Status

approved