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A003177
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Ceiling of 24(2^n-1)/n.
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3
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24, 36, 56, 90, 149, 252, 436, 765, 1363, 2456, 4467, 8190, 15122, 28086, 52428, 98303, 185042, 349524, 662258, 1258290, 2396744, 4575604, 8753330, 16777215, 32212254, 61946643, 119304647, 230087533
(list; graph; refs; listen; history; internal format)
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