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A016724
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Expansion of (2-2*x-x^2)/(1-2*x^2)/(1-x)^2.
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2, 2, 5, 4, 9, 6, 15, 8, 25, 10, 43, 12, 77, 14, 143, 16, 273, 18, 531, 20, 1045, 22, 2071, 24, 4121, 26, 8219, 28, 16413, 30, 32799, 32, 65569, 34, 131107, 36, 262181, 38, 524327, 40, 1048617, 42, 2097195, 44
(list; graph; refs; listen; history; internal format)
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