Series reversion of x/(1 + x + x^4).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =6a(6) =16a(7) =36a(8) =75a(9) =163a(10) =391a(11) =991a(12) =2498a(13) =6150a(14) =15016a(15) =37116a(16) =93481a(17) =238137a(18) =607921a(19) =1550401a(20) =3959335a(21) =10155615a(22) =26182267a(23) =67753907a(24) =175713561a(25) =456422121a(26) =1187771521a(27) =3097869841a(28) =8097629671a(29) =21207212047