A020038 Nearest integer to Gamma(n + 3/5)/Gamma(3/5).

1, 1, 1, 2, 9, 41, 231, 1528, 11610, 99850, 958562, 10160756, 117864768, 1485096081, 20197306708, 294880677942, 4600138575888, 76362300359740, 1343976486331426, 24997962645764522, 489960067856984638

Offset

0,4

Comments

Gamma(n + 3/5)/Gamma(3/5) = 1, 3/5, 24/25, 312/125, 5616/625, 129168/3125, 3616704/15625, 119351232/78125, ... - R. J. Mathar, Sep 04 2016

Links

Table of n, a(n) for n=0..20.

Maple

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

Mathematica

Table[Round[QGamma[n+3/5, 1]/QGamma[3/5, 1]], {n, 0, 20}] (* Harvey P. Dale, May 19 2019 *)

Crossrefs

Cf. A047056, A020083, A020128.

Sequence in context: A181375 A152052 A192661 * A330016 A056845 A354302

Adjacent sequences: A020035 A020036 A020037 * A020039 A020040 A020041

Keyword

nonn

Author

Simon Plouffe

Status

approved