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

Terms

a(0) =1a(1) =1a(2) =2a(3) =5a(4) =13a(5) =36a(6) =104a(7) =309a(8) =940a(9) =2915a(10) =9184a(11) =29328a(12) =94747a(13) =309180a(14) =1017824a(15) =3376693a(16) =11279274a(17) =37906330a(18) =128085630a(19) =434913555a(20) =1483226921a(21) =5078436800a(22) =17450556480a(23) =60159492600a(24) =208013078910a(25) =721205983737