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A020087 Integer part of Gamma(n + 1/4)/Gamma(1/4). 2
1, 0, 0, 0, 2, 9, 50, 318, 2310, 19060, 176310, 1807181, 20330788, 249052161, 3299941145, 47024161317, 717118460090, 11653174976468, 201017268344078, 3668565147279423, 70619879085128903, 1430052551473860292 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,5

LINKS

G. C. Greubel, Table of n, a(n) for n = 0..450

MAPLE

Digits:= 64: x:=1/4: A020087:= proc(n, x) trunc(GAMMA(n+x)/GAMMA(x)); end;

MATHEMATICA

Table[IntegerPart[Pochhammer[1/4, n]], {n, 0, 30}] (* G. C. Greubel, Nov 19 2018 *)

PROG

(PARI) default(realprecision, 100); for(n=0, 30, print1(truncate( gamma(n+1/4)/gamma(1/4)), ", ")) \\ G. C. Greubel, Nov 19 2018

(MAGMA) [Truncate(Gamma(n + 1/4)/Gamma(1/4)): n in [0..30]]; // G. C. Greubel, Nov 19 2018

(Sage) [int(gamma(n + 1/4)/gamma(1/4))  for n in range(30)] # G. C. Greubel, Nov 19 2018

CROSSREFS

Cf. A020042, A020087.

Sequence in context: A192945 A271960 A175895 * A277378 A079836 A026945

Adjacent sequences:  A020084 A020085 A020086 * A020088 A020089 A020090

KEYWORD

nonn

AUTHOR

Simon Plouffe

STATUS

approved

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Last modified October 20 15:58 EDT 2019. Contains 328267 sequences. (Running on oeis4.)