Ceiling of Gamma(n + 11/12)/Gamma(11/12).

Terms

a(0) =1a(1) =1a(2) =2a(3) =6a(4) =21a(5) =99a(6) =584a(7) =4039a(8) =31971a(9) =285070a(10) =2826942a(11) =30860774a(12) =367757554a(13) =4750201728a(14) =66106974038a(15) =986095696056