a(n) = floor(Gamma(n + 8/11)/Gamma(8/11)).

Terms

a(0) =1a(1) =0a(2) =1a(3) =3a(4) =12a(5) =60a(6) =345a(7) =2325a(8) =17972a(9) =156848a(10) =1525707a(11) =16366684a(12) =191936576a(13) =2442829156a(14) =33533382055a(15) =493855262996