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

Terms

a(0) =1a(1) =2a(2) =10a(3) =60a(4) =390a(5) =2660a(6) =18772a(7) =138984a(8) =1107686a(9) =9576100a(10) =87944188a(11) =830857464a(12) =7876505340a(13) =73967614584a(14) =685644645896