Ceiling of Gamma(n+2/11)/Gamma(2/11).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =7a(6) =33a(7) =200a(8) =1436a(9) =11742a(10) =107810a(11) =1097701a(12) =12274283a(13) =149523080a(14) =1970986053a(15) =27952165839a(16) =424364699555