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A053638
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a(n) = ceiling(2^n/n).
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21
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2, 2, 3, 4, 7, 11, 19, 32, 57, 103, 187, 342, 631, 1171, 2185, 4096, 7711, 14564, 27595, 52429, 99865, 190651, 364723, 699051, 1342178, 2581111, 4971027, 9586981, 18512791, 35791395, 69273667, 134217728, 260301049, 505290271, 981706811, 1908874354, 3714566311, 7233629131
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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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MATHEMATICA
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PROG
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(Sage) [ceil(2^n/n) for n in (1..40)] # G. C. Greubel, May 17 2019
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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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