G.f. A(x) satisfies: A( A(x)^3 - A(x)^4 ) = x*A(x)^2.

Terms

a(0) =1a(1) =1a(2) =2a(3) =4a(4) =10a(5) =27a(6) =78a(7) =234a(8) =722a(9) =2275a(10) =7288a(11) =23662a(12) =77676a(13) =257372a(14) =859592a(15) =2890838a(16) =9781066a(17) =33271759a(18) =113720380a(19) =390354292a(20) =1345099574a(21) =4651222825a(22) =16134691254a(23) =56132722306a(24) =195807489940a(25) =684712787166