G.f.: (1 + 3x + 5x^2 + 7x^3...) / (1 - 2x + 3x^2 - 4x^3...). 1, 5, 12, 20, 28, 36, 44, 52, 60, 68, 76, 84, 92, 100, 108, 116, 124, 132, 140, 148, 156
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