a(n) = floor(Gamma(n+1/11) / Gamma(1/11)).

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =0a(5) =2a(6) =13a(7) =81a(8) =576a(9) =4664a(10) =42405a(11) =427908a(12) =4745899a(13) =57382239a(14) =751185683a(15) =10584889174a(16) =159735600269