Nearest integer to Gamma(n + 4/9)/Gamma(4/9).

Terms

a(0) =1a(1) =0a(2) =1a(3) =2a(4) =5a(5) =24a(6) =131a(7) =843a(8) =6275a(9) =52988a(10) =500442a(11) =5226842a(12) =59818300a(13) =744405515a(14) =10008118595a(15) =144561713037