A049133 Revert transform of (x - 1)^2/(1 - x - x^3)).

1, 1, 2, 4, 8, 14, 15, -31, -308, -1520, -6138, -22260, -74745, -234503, -684931, -1828743, -4249668, -7308296, -592722, 75389838, 487028178, 2286167634, 9278268220, 34247910114, 117081254935, 371845391419, 1086709633580, 2836930639816, 6075557104011