Reversion of x - x^2 + x^5.

Terms

a(0) =0a(1) =1a(2) =1a(3) =2a(4) =5a(5) =13a(6) =35a(7) =96a(8) =264a(9) =720a(10) =1925a(11) =4966a(12) =12038a(13) =25907a(14) =41310a(15) =-5168a(16) =-468996a(17) =-2982240a(18) =-14350320a(19) =-61334790a(20) =-244951840a(21) =-934684465a(22) =-3447083370a(23) =-12365767620a(24) =-43304717625a(25) =-148314737961a(26) =-497033803314