Expansion of (1/x) * Series_Reversion( x * (1 - x^2 * (1 + x)^2)^2 ).

Terms

a(0) =1a(1) =0a(2) =2a(3) =4a(4) =13a(5) =52a(6) =170a(7) =680a(8) =2584a(9) =10164a(10) =40940a(11) =165100a(12) =678069a(13) =2801284a(14) =11670384a(15) =48972308a(16) =206622615a(17) =876685992a(18) =3736757466a(19) =15995113684a(20) =68729224795a(21) =296334919160