A077870 Expansion of (1-x)^(-1)/(1-x+2*x^3).

1, 2, 3, 2, -1, -6, -9, -6, 7, 26, 39, 26, -25, -102, -153, -102, 103, 410, 615, 410, -409, -1638, -2457, -1638, 1639, 6554, 9831, 6554, -6553, -26214, -39321, -26214, 26215, 104858, 157287, 104858, -104857, -419430, -629145, -419430, 419431, 1677722, 2516583, 1677722, -1677721, -6710886