G.f.: Prod_{ n >= 1} (1 + x^(2^n-1) + 2*x^(2^n)). 1, 1, 2, 1, 3, 4, 4, 1, 3, 4, 5, 5, 10, 12, 8, 1, 3, 4, 5, 5, 10, 12, 9, 5, 10, 13, 15, 20, 32
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