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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
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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 September 7 23:15 EDT 2024. Contains 375749 sequences. (Running on oeis4.)