a(n) = floor(Gamma(n+5/11)/Gamma(5/11)).

Terms

a(0) =1a(1) =0a(2) =0a(3) =1a(4) =5a(5) =24a(6) =136a(7) =879a(8) =6554a(9) =55412a(10) =523897a(11) =5477110a(12) =62737806a(13) =781370863a(14) =10512989797a(15) =151960488890