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A129383
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Expansion of g(x)-xg(x^2), g(x) the g.f. of A001405.
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1
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1, 0, 2, 2, 6, 8, 20, 32, 70, 120, 252, 452, 924, 1696, 3432, 6400, 12870, 24240, 48620, 92252, 184756, 352464, 705432, 1351616, 2704156, 5199376, 10400600, 20056584, 40116600, 77555328, 155117520, 300533760, 601080390, 1166790240
(list; graph; refs; listen; history; internal format)
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