a(n) = floor(Gamma(n+10/11)/Gamma(10/11)).

Terms

a(0) =1a(1) =0a(2) =1a(3) =5a(4) =19a(5) =96a(6) =572a(7) =3955a(8) =31285a(9) =278720a(10) =2761871a(11) =30129503a(12) =358814994a(13) =4631975383a(14) =64426566694a(15) =960541539816