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

Terms

a(0) =1a(1) =0a(2) =2a(3) =2a(4) =9a(5) =22a(6) =65a(7) =210a(8) =612a(9) =2052a(10) =6384a(11) =21252a(12) =69460a(13) =231660a(14) =776997a(15) =2617888a(16) =8900100a(17) =30329904a(18) =104041003a(19) =357956352a(20) =1236881399a(21) =4287549006a(22) =14908649067a(23) =51990305840a(24) =181761080410a(25) =637010036880