Recip transform of 2*(1 + x^4 + x^6)-1/(1-x).

Terms

a(0) =1a(1) =1a(2) =3a(3) =11a(4) =43a(5) =183a(6) =813a(7) =3733a(8) =17583a(9) =84459a(10) =412181a(11) =2037933a(12) =10186473a(13) =51389613a(14) =261324211a(15) =1338084043a(16) =6893139549a(17) =35700598797a(18) =185782039263a(19) =970926967247