A049135 Revert transform of (-1 + 3x - 2x^2 + x^3)/(2x - 1).

1, 1, 2, 6, 22, 88, 368, 1585, 6984, 31348, 142868, 659434, 3076432, 14483556, 68723800, 328322903, 1577959294, 7624155960, 37011662868, 180436535308, 883016392536, 4336268255420, 21361517691248, 105535705919116