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A295451 a(n) = (14*n)!*n!/((7*n)!*(5*n)!*(3*n)!). 1

%I

%S 1,24024,2677114440,347714586888240,48026128282174802760,

%T 6858171535488233066949024,1000085563511096962480102423440,

%U 147950885386878187684691046887599320,22118704841920591519508406949192397599560,3333326541499644169355299034603982863427892800

%N a(n) = (14*n)!*n!/((7*n)!*(5*n)!*(3*n)!).

%F G.f.: hypergeom([1/14, 3/14, 5/14, 1/2, 9/14, 11/14, 13/14], [1/5, 1/3, 2/5, 3/5, 2/3, 4/5], 13492928512/84375*x).

%Y Cf. A295431.

%K nonn

%O 0,2

%A _Gheorghe Coserea_, Nov 27 2017

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Last modified June 26 10:50 EDT 2022. Contains 354881 sequences. (Running on oeis4.)