Nearest integer to Gamma(n + 9/10)/Gamma(9/10).

Terms

a(0) =1a(1) =1a(2) =2a(3) =5a(4) =19a(5) =95a(6) =559a(7) =3858a(8) =30478a(9) =271252a(10) =2685395a(11) =29270806a(12) =348322597a(13) =4493361500a(14) =62457724854a(15) =930620100318