G.f.: (1 + x^5 ) / ( (1-x^3)*(1-x^4)). 1, 0, 0, 1, 1, 1, 1, 1, 2, 2, 1, 2, 3, 2, 2, 3, 3, 3, 3, 3, 4, 4, 3, 4, 5, 4, 4, 5, 5, 5, 5, 5, 6, 6
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