G.f. A(x) satisfies: A(x) = 1 + x*A(x)^3 - x^2/A(x)^7.

Terms

a(0) =1a(1) =1a(2) =2a(3) =16a(4) =47a(5) =339a(6) =1166a(7) =8976a(8) =35651a(9) =278278a(10) =1212177a(11) =9302196a(12) =43167236a(13) =325489466a(14) =1589818896a(15) =11803540132a(16) =60156687345a(17) =440114954611