A295467 a(n) = (15*n)!*n!/((8*n)!*(5*n)!*(3*n)!).

1, 45045, 9704539845, 2437781614596900, 651257537955459119685, 179888173423256639605246920, 50740927694468549286238961648100, 14520123213959375344187178875204676660, 4199008318481460680983513774150641241683525, 1224055446916973458193847787407419946733555964400

Offset

0,2

Links

Table of n, a(n) for n=0..9.

Formula

G.f.: hypergeom([1/15, 2/15, 4/15, 7/15, 8/15, 11/15, 13/15, 14/15], [1/8, 1/4, 3/8, 1/2, 5/8, 3/4, 7/8], 5189853515625/16777216*x).

Crossrefs

Cf. A295431.

Sequence in context: A230618 A185574 A209783 * A158931 A162894 A031851

Adjacent sequences: A295464 A295465 A295466 * A295468 A295469 A295470

Keyword

nonn

Author

Gheorghe Coserea, Nov 28 2017

Status

approved