A295447 a(n) = (14*n)!*(3*n)!/((9*n)!*(7*n)!*n!).

1, 286, 196650, 152743696, 125117624170, 105603640815036, 90864922211333424, 79239192984544856640, 69787746378451035806058, 61932198387397883017437250, 55292497255461005096459802900, 49606246898694412506503464226400, 44685036796879893398022369751697200

Offset: 0

Author

Gheorghe Coserea, Nov 27 2017

Keywords

• nonn

Crossrefs

Cf. A295431.

Formula

G.f.: hypergeom([1/14, 3/14, 5/14, 1/2, 9/14, 11/14, 13/14], [1/9, 2/9, 4/9, 5/9, 7/9, 8/9], 13492928512/14348907*x).