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A020089 Integer part of Gamma(n + 1/3)/Gamma(1/3). 3

%I #17 Sep 08 2022 08:44:45

%S 1,0,0,1,3,14,79,505,3710,30920,288591,2982109,33797240,416832633,

%T 5557768440,79661347641,1221473997164,19950741953681,345812860530487,

%U 6339902443058941,122571447232472865,2492286093726948268

%N Integer part of Gamma(n + 1/3)/Gamma(1/3).

%H G. C. Greubel, <a href="/A020089/b020089.txt">Table of n, a(n) for n = 0..449</a>

%p Digits:= 64: x:=1/3: f:= proc(n,x) trunc(GAMMA(n+x)/GAMMA(x)); end;

%p # alternative

%p f:= n -> trunc(simplify(GAMMA(n+1/3)/GAMMA(1/3))): map(f, [$0..30]); # _Robert Israel_, Nov 20 2018

%t Table[IntegerPart[Pochhammer[1/3, n]], {n, 0, 30}] (* _G. C. Greubel_, Nov 19 2018 *)

%o (PARI) default(realprecision, 100); for(n=0,30, print1(truncate( gamma(n+1/3)/gamma(1/3)), ", ")) \\ _G. C. Greubel_, Nov 19 2018

%o (Magma) [Truncate(Gamma(n + 1/3)/Gamma(1/3)): n in [0..30]]; // _G. C. Greubel_, Nov 19 2018

%o (Sage) [int(gamma(n + 1/3)/gamma(1/3)) for n in range(30)] # _G. C. Greubel_, Nov 19 2018

%Y Cf. A020044, A020134.

%K nonn

%O 0,5

%A _Simon Plouffe_

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Last modified April 25 12:53 EDT 2024. Contains 371969 sequences. (Running on oeis4.)