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A295466
a(n) = (15*n)!*(6*n)!*n!/((12*n)!*(5*n)!*(3*n)!*(2*n)!).
1
1, 1365, 6531525, 36155455908, 212422672667205, 1289347174337943240, 7988578284829726217700, 50202452144162092092126900, 318773474802860214828983563845, 2040213003374489097738224937634800, 13139471029644309699515037254016803400, 85049362365373576290876509860293890825640
OFFSET
0,2
FORMULA
G.f.: hypergeom([1/15, 2/15, 4/15, 7/15, 8/15, 11/15, 13/15, 14/15], [1/12, 1/4, 5/12, 1/2, 7/12, 3/4, 11/12], 7119140625/1048576*x).
CROSSREFS
Cf. A295431.
Sequence in context: A140936 A022204 A015405 * A292780 A180089 A020409
KEYWORD
nonn
AUTHOR
Gheorghe Coserea, Nov 28 2017
STATUS
approved