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

Terms

a(0) =1a(1) =2a(2) =8a(3) =40a(4) =224a(5) =1352a(6) =8576a(7) =56352a(8) =380160a(9) =2617584a(10) =18320384a(11) =129950912a(12) =932114432a(13) =6749344832a(14) =49268899840a(15) =362189529344