Ceiling of Gamma(n+5/6)/Gamma(5/6).

Terms

a(0) =1a(1) =1a(2) =2a(3) =5a(4) =17a(5) =81a(6) =468a(7) =3197a(8) =25043a(9) =221209a(10) =2175217a(11) =23564851a(12) =278850731a(13) =3578584369a(14) =49503750433a(15) =734305631413