A224086 Denominators of hypergeometric Cauchy numbers c_(3,n).

1, 4, 40, 160, 5600, 4480, 44800, 25600, 4928000, 3942400, 73216000, 186368000, 501760000, 2007040000, 48742400000, 38993920000, 71310131200000, 16778854400000, 167788544000000, 1412956160000, 73932931072000000, 42247389184000000

Offset

0,2

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..300

Takao Komatsu, Hypergeometric Cauchy numbers, Int. J. Number Theory 9 (2013), 545-560.

Mathematica

With[{nn = 30, hh = 3}, Denominator[CoefficientList[Series[1/Hypergeometric2F1[1, hh, hh + 1, -x], {x, 0, nn}], x] Range[0, nn]!]]

Crossrefs

Cf. A006233.

Sequence in context: A187378 A199833 A248964 * A271013 A163322 A238328

Adjacent sequences: A224083 A224084 A224085 * A224087 A224088 A224089

Keyword

nonn,frac

Author

Takao Komatsu, Mar 30 2013

Status

approved