a(n) = floor(Gamma(n+4/11)/Gamma(4/11)).

Terms

a(0) =1a(1) =0a(2) =0a(3) =1a(4) =3a(5) =17a(6) =92a(7) =587a(8) =4323a(9) =36162a(10) =338610a(11) =3509239a(12) =39877720a(13) =493033634a(14) =6588722212a(15) =94638009963