A020055 a(n) = floor(Gamma(n+5/11)/Gamma(5/11)).

1, 0, 0, 1, 5, 24, 136, 879, 6554, 55412, 523897, 5477110, 62737806, 781370863, 10512989797, 151960488890, 2348480282846, 38643175563195, 674499064375771, 12447573642571060, 242161887228200639, 4953311329667740358

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(5/11, n)), n = 0..25); # G. C. Greubel, Nov 30 2019

Mathematica

Floor[Pochhammer[5/11, Range[0, 25]]] (* G. C. Greubel, Nov 30 2019 *)

Prog

(PARI) x=5/11; vector(26, n, gamma(n-1+x)\gamma(x) ) \\ G. C. Greubel, Nov 30 2019
(Magma) [Floor(Gamma(n+5/11)/Gamma(5/11)): n in [0..25]]; // G. C. Greubel, Nov 30 2019
(Sage) [floor(rising_factorial(5/11, n)) for n in (0..25)] # G. C. Greubel, Nov 30 2019

Crossrefs

Cf. A020010, A020100.

Sequence in context: A193668 A009411 A080996 * A256325 A286743 A232318

Adjacent sequences: A020052 A020053 A020054 * A020056 A020057 A020058

Keyword

nonn

Author

Simon Plouffe

Status

approved