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

Terms

a(0) =1a(1) =1a(2) =2a(3) =7a(4) =26a(5) =98a(6) =385a(7) =1569a(8) =6556a(9) =27908a(10) =120624a(11) =528030a(12) =2336202a(13) =10430155a(14) =46930285a(15) =212597901a(16) =968833424a(17) =4438398734a(18) =20428750419a(19) =94424634294a(20) =438104297376