A077825 Expansion of (1-x)^(-1)/(1-2*x-3*x^2-3*x^3).

1, 3, 10, 33, 106, 342, 1102, 3549, 11431, 36816, 118573, 381888, 1229944, 3961272, 12758041, 41089731, 132337402, 426218121, 1372717642, 4421101854, 14239010998, 45859480485, 147699299527, 475694073504, 1532064487045, 4934309093184, 15891893868016