A020031 Nearest integer to Gamma(n + 4/7)/Gamma(4/7).

1, 1, 1, 2, 8, 38, 210, 1380, 10450, 89574, 857352, 9063435, 104876887, 1318452295, 17893281148, 260730668151, 4059948975491, 67279154450986, 1182190856781603, 21954973054515490, 429690186924088871

Offset: 0

Author

Simon Plouffe

Keywords

• nonn

Comments

a(n) equals A020121(n) or A020076(n). - R. J. Mathar, May 18 2007

Crossrefs

Cf. A020121, A020076, A220609.

Programs

Maple

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

Mathematica

Round[Gamma[Range[0,20]+4/7]/Gamma[4/7]] (* Harvey P. Dale, Dec 24 2023 *)