A049166 Recip transform of 2*(1 + x^5 + x^6)-1/(1-x).

1, 1, 3, 11, 45, 195, 885, 4153, 19983, 98055, 488805, 2468545, 12602743, 64937493, 337264163, 1763752075, 9279601413, 49084160037, 260867197263, 1392352081031, 7460146494529, 40110432099247, 216343171411657