a(n) = C(5+2*n,5+n)*C(10+2*n,0+n).

A114253

a(n) = C(5+2*n,5+n)*C(10+2*n,0+n).

Terms

    a(0) =1a(1) =84a(2) =3276a(3) =92400a(4) =2187900a(5) =46558512a(6) =923410488a(7) =17439488352a(8) =317907339750

External references