A020039 Nearest integer to Gamma(n + 2/5)/Gamma(2/5).

1, 0, 1, 1, 5, 20, 109, 695, 5142, 43193, 406016, 4222569, 48137291, 596902408, 7998492273, 115178288736, 1773745646540, 29089428603255, 506156057696641, 9313271461618196, 180677466355392996, 3685820313650017111

Offset: 0

Author

Simon Plouffe

Keywords

• nonn

Comments

Gamma(n + 2/5)/Gamma(2/5) = 1, 2/5, 14/25, 168/125, 2856/625, 62832/3125, 1696464/15625, 54286848/78125, ... - R. J. Mathar, Sep 04 2016

Crossrefs

Cf. A047055, A020084, A020129.

Programs

Maple

Digits := 64:f := proc(n,x) round(GAMMA(n+x)/GAMMA(x)); end;