Expansion of g.f. A(x) satisfying A( -x * A( x - x^2 ) ) = -x^2.

Terms

a(0) =1a(1) =1a(2) =3a(3) =8a(4) =22a(5) =65a(6) =200a(7) =637a(8) =2090a(9) =7021a(10) =24041a(11) =83611a(12) =294511a(13) =1048376a(14) =3765080a(15) =13623820a(16) =49617990a(17) =181733222a(18) =668947823a(19) =2473277248a(20) =9180700787a(21) =34200489886a(22) =127819746470a(23) =479124333321