A020130 Ceiling of Gamma(n+1/5)/Gamma(1/5).

1, 1, 1, 1, 2, 8, 37, 229, 1648, 13508, 124269, 1267543, 14196478, 173197025, 2286200719, 32464050200, 493453563030, 7993947721072, 137495900802424, 2502425394604114, 48046567576398987, 970540665043259526, 20575462098917101931, 456775258595959662860, 10597185999426264178335

Offset

0,5

Links

Paolo Xausa, Table of n, a(n) for n = 0..400

Maple

Digits := 64:f := proc(n, x) ceil(GAMMA(n+x)/GAMMA(x)); end;

Mathematica

Ceiling[Pochhammer[1/5, Range[0, 25]]] (* Paolo Xausa, Jan 15 2026 *)

Crossrefs

Cf. A020040, A020085.

Sequence in context: A342052 A317873 A289316 * A159051 A053520 A202744

Adjacent sequences: A020127 A020128 A020129 * A020131 A020132 A020133

Keyword

nonn

Author

Simon Plouffe

Extensions

More terms from Paolo Xausa, Jan 15 2026

Status

approved