Expansion of reversion of (x - 2*x^2) / (1 - x)^3.

Terms

a(0) =1a(1) =-1a(2) =2a(3) =-3a(4) =7a(5) =-12a(6) =30a(7) =-55a(8) =143a(9) =-273a(10) =728a(11) =-1428a(12) =3876a(13) =-7752a(14) =21318a(15) =-43263a(16) =120175a(17) =-246675a(18) =690690a(19) =-1430715a(20) =4032015a(21) =-8414640a(22) =23841480a(23) =-50067108a(24) =142498692a(25) =-300830572a(26) =859515920a(27) =-1822766520a(28) =5225264024a(29) =-11124755664