A030976 a(n) = floor(exp(2/3)*n!).

1, 3, 11, 46, 233, 1402, 9816, 78532, 706793, 7067937, 77747310, 932967722, 12128580386, 169800125411, 2547001881168, 40752030098692, 692784511677766, 12470121210199797, 236932302993796153, 4738646059875923070

Offset

1,2

Links

Jinyuan Wang, Table of n, a(n) for n = 1..449

Crossrefs

Sequence in context: A337913 A129579 A030814 * A264416 A290712 A248208

Adjacent sequences: A030973 A030974 A030975 * A030977 A030978 A030979

Keyword

nonn,easy

Author

Simon Plouffe

Status

approved