p-INVERT of the positive integers, where p(S) = 1 - S - S^4.

Terms

a(0) =1a(1) =3a(2) =8a(3) =22a(4) =65a(5) =203a(6) =647a(7) =2053a(8) =6423a(9) =19811a(10) =60490a(11) =183750a(12) =557551a(13) =1693921a(14) =5157224a(15) =15731043a(16) =48041589a(17) =146785994a(18) =448475954a(19) =1369853581a(20) =4182850121a(21) =12769287055a(22) =38976737437a(23) =118967979141a(24) =363132913719