Expansion of (1/x) * Series_Reversion( x*(1+x-x^4)/(1+x)^2 ).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =6a(6) =16a(7) =36a(8) =76a(9) =171a(10) =427a(11) =1111a(12) =2841a(13) =7096a(14) =17722a(15) =45124a(16) =117078a(17) =305906a(18) =798526a(19) =2083465a(20) =5456182a(21) =14373672a(22) =38051106a(23) =101006111a(24) =268552030a(25) =715329780a(26) =1909982822a(27) =5112653055a(28) =13715017875a(29) =36854688588