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A295472 a(n) = (20*n)!*(3*n)!*(2*n)!/((10*n)!*(8*n)!*(6*n)!*n!). 1
1, 277134, 289119667590, 343884311368413900, 432365948166678100986950, 560667054442505107362561718884, 741516037730263944066134968787982492, 994213662322534065297017671627388489353560, 1346503768567844163328344622811399413074559930950 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..8.

FORMULA

G.f.: hypergeom([1/20, 3/20, 7/20, 9/20, 11/20, 13/20, 17/20, 19/20], [1/8, 1/6, 3/8, 1/2, 5/8, 5/6, 7/8], 39062500/27*x).

CROSSREFS

Cf. A295431.

Sequence in context: A157839 A237808 A271349 * A162765 A186879 A224252

Adjacent sequences:  A295469 A295470 A295471 * A295473 A295474 A295475

KEYWORD

nonn

AUTHOR

Gheorghe Coserea, Nov 28 2017

STATUS

approved

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Last modified January 15 09:54 EST 2021. Contains 340187 sequences. (Running on oeis4.)