Nearest integer to Gamma(n + 2/7)/Gamma(2/7).

Terms

a(0) =1a(1) =0a(2) =0a(3) =1a(4) =3a(5) =12a(6) =62a(7) =393a(8) =2862a(9) =23714a(10) =220205a(11) =2264965a(12) =25561752a(13) =314044379a(14) =4172303889a(15) =59604341272a(16) =911094930877