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

Terms

a(0) =1a(1) =1a(2) =2a(3) =5a(4) =13a(5) =35a(6) =96a(7) =264a(8) =719a(9) =1914a(10) =4888a(11) =11583a(12) =23540a(13) =29907a(14) =-57120a(15) =-695742a(16) =-3938275a(17) =-18266657a(18) =-76983710a(19) =-306116660a(20) =-1168987469a(21) =-4327878214a(22) =-15617536020a(23) =-55097816085a(24) =-190320077663a(25) =-643865817117