G.f. A(x) satisfies A(x) = 1 + x*A(x)^4 / (1 - x*A(x)^2).

A364792

G.f. A(x) satisfies A(x) = 1 + x*A(x)^4 / (1 - x*A(x)^2).

Terms

    a(0) =1a(1) =1a(2) =5a(3) =33a(4) =250a(5) =2054a(6) =17800a(7) =160183a(8) =1482535a(9) =14022415a(10) =134943095a(11) =1317046306a(12) =13005842030a(13) =129708875695

External references