A295468 a(n) = (30*n)!*(5*n)!*(3*n)!*(2*n)!/((15*n)!*(10*n)!*(8*n)!*(6*n)!*n!).

1, 2772725670, 40337629723514950470, 671214073076279711920414071900, 11815915461993730897935386470911734090310, 214599520915474479942307452790907076147031402434420, 3975780607168011583140781349809187812166883920578195778723100

Offset

0,2

Links

Table of n, a(n) for n=0..6.

Formula

G.f.: hypergeom([1/30, 7/30, 11/30, 13/30, 17/30, 19/30, 23/30, 29/30], [1/8, 1/4, 3/8, 1/2, 5/8, 3/4, 7/8], 5189853515625/256*x).

Crossrefs

Cf. A295431.

Sequence in context: A216902 A327811 A327835 * A257913 A346495 A072017

Adjacent sequences: A295465 A295466 A295467 * A295469 A295470 A295471

Keyword

nonn

Author

Gheorghe Coserea, Nov 28 2017

Status

approved