A020133 Ceiling of Gamma(n+2/3)/Gamma(2/3).

1, 1, 2, 3, 11, 51, 288, 1916, 14685, 127263, 1230202, 13122150, 153091745, 1939162101, 26501882046, 388694270001, 6089543563341, 101492392722343, 1793032271428053, 33469935733323642, 658242069422031619, 13603669434721986785, 294746171085643046994, 6680913211274575731864

Offset

0,3

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[2/3, Range[0, 25]]] (* Paolo Xausa, Jan 13 2026 *)

Crossrefs

Cf. A020043, A020088.

Sequence in context: A011365 A072876 A184315 * A086528 A152024 A353726

Adjacent sequences: A020130 A020131 A020132 * A020134 A020135 A020136

Keyword

nonn

Author

Simon Plouffe

Extensions

More terms from Paolo Xausa, Jan 13 2026

Status

approved