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) =4a(6) =7a(7) =11a(8) =20a(9) =40a(10) =79a(11) =147a(12) =278a(13) =550a(14) =1110a(15) =2204a(16) =4352a(17) =8708a(18) =17689a(19) =35971a(20) =72933a(21) =148271a(22) =303582a(23) =624132a(24) =1283898a(25) =2643354a(26) =5458457a(27) =11306443a(28) =23460067a(29) =48727689