A295463 a(n) = (15*n)!*(7*n)!/((14*n)!*(5*n)!*(3*n)!).

1, 105, 29029, 9166740, 3061860165, 1055101029480, 370876177263460, 132173658552875940, 47583151292491193925, 17263325497497942304176, 6301638858548635346648904, 2311724488328238270596515080, 851528189436978072303333019620, 314744785754005167603848040595140

Offset

0,2

Links

Table of n, a(n) for n=0..13.

Formula

G.f.: hypergeom([1/15, 2/15, 4/15, 7/15, 8/15, 11/15, 13/15, 14/15], [1/14, 3/14, 5/14, 1/2, 9/14, 11/14, 13/14], 5189853515625/13492928512*x).

Crossrefs

Cf. A295431.

Sequence in context: A001546 A111647 A368513 * A339847 A145621 A167779

Adjacent sequences: A295460 A295461 A295462 * A295464 A295465 A295466

Keyword

nonn

Author

Gheorghe Coserea, Nov 28 2017

Status

approved