A224088 Denominators of hypergeometric Cauchy numbers c_(4,n).

1, 5, 75, 875, 13125, 13125, 459375, 3609375, 54140625, 248828125, 8211328125, 533203125, 130634765625, 854150390625, 20133544921875, 892587158203125, 13388807373046875, 3937884521484375, 597245819091796875, 516415557861328125

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 = 4}, Denominator[CoefficientList[Series[1/Hypergeometric2F1[1, hh, hh + 1, -x], {x, 0, nn}], x] Range[0, nn]!]]

Crossrefs

Cf. A006233.

Sequence in context: A030986 A284924 A248340 * A219462 A091882 A034688

Adjacent sequences: A224085 A224086 A224087 * A224089 A224090 A224091

Keyword

nonn,frac

Author

Takao Komatsu, Mar 30 2013

Status

approved