A020056 a(n) = floor(Gamma(n+4/11)/Gamma(4/11)).

1, 0, 0, 1, 3, 17, 92, 587, 4323, 36162, 338610, 3509239, 39877720, 493033634, 6588722212, 94638009963, 1453983971264, 23792464984330, 413123710182463, 7586453586987048, 146901328548021942, 2991445235886992290

Offset

0,5

Links

G. C. Greubel, Table of n, a(n) for n = 0..449

Maple

Digits := 64:f := proc(n, x) trunc(GAMMA(n+x)/GAMMA(x)); end;
seq(floor(pochhammer(4/11, n)), n = 0..25); # G. C. Greubel, Nov 30 2019

Mathematica

Floor[Pochhammer[4/11, Range[0, 25]]] (* G. C. Greubel, Nov 30 2019 *)

Prog

(PARI) x=4/11; vector(26, n, gamma(n-1+x)\gamma(x) ) \\ G. C. Greubel, Nov 30 2019
(Magma) [Floor(Gamma(n+4/11)/Gamma(4/11)): n in [0..25]]; // G. C. Greubel, Nov 30 2019
(Sage) [floor(rising_factorial(4/11, n)) for n in (0..25)] # G. C. Greubel, Nov 30 2019

Crossrefs

Cf. A020011, A020101.

Sequence in context: A204092 A221731 A290925 * A086842 A151330 A370570

Adjacent sequences: A020053 A020054 A020055 * A020057 A020058 A020059

Keyword

nonn

Author

Simon Plouffe

Status

approved