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A281375
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a(n) = floor(2^(n+1)/n).
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1
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4, 4, 5, 8, 12, 21, 36, 64, 113, 204, 372, 682, 1260, 2340, 4369, 8192, 15420, 29127, 55188, 104857, 199728, 381300, 729444, 1398101, 2684354, 5162220, 9942053, 19173961, 37025580, 71582788, 138547332, 268435456, 520602096, 1010580540, 1963413621, 3817748707, 7429132620, 14467258260, 28192605840, 54975581388
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OFFSET
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1,1
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LINKS
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FORMULA
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MAPLE
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PROG
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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