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A020078
a(n) = floor( Gamma(n+2/7)/Gamma(2/7) ).
7
1, 0, 0, 0, 2, 11, 62, 392, 2862, 23714, 220204, 2264965, 25561751, 314044378, 4172303889, 59604341272, 911094930876, 14837831731419, 256482519928831, 4689966078698628, 90449345803473558, 1834829586299035048
OFFSET
0,5
LINKS
MAPLE
Digits := 64:f := proc(n, x) trunc(GAMMA(n+x)/GAMMA(x)); end;
seq(floor(pochhammer(2/7, n)), n = 0..25); # G. C. Greubel, Nov 17 2019
MATHEMATICA
Floor[Pochhammer[2/7, Range[0, 25]]] (* G. C. Greubel, Nov 17 2019 *)
PROG
(PARI) vector(26, n, my(x=2/7); gamma(n-1+x)\gamma(x) ) \\ G. C. Greubel, Nov 17 2019
(Magma) [Floor(Gamma(n+2/7)/Gamma(2/7)): n in [0..25]]; // G. C. Greubel, Nov 17 2019
(Sage) [floor(rising_factorial(2/7, n)) for n in (0..25)] # G. C. Greubel, Nov 17 2019
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved