Expansion of (1/x) * Series_Reversion( x * (1-x-x^4/(1-x)^3) ).

Terms

a(0) =1a(1) =1a(2) =2a(3) =5a(4) =15a(5) =52a(6) =198a(7) =793a(8) =3255a(9) =13529a(10) =56696a(11) =239340a(12) =1017900a(13) =4361840a(14) =18828606a(15) =81833505a(16) =357865215a(17) =1573549667a(18) =6952392450a(19) =30848928525a(20) =137403484655a(21) =614104910096