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A179872
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Numbers h such that antiharmonic mean B(h) of the numbers k < h such that gcd(k, h) = 1 is not integer.
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17
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3, 4, 6, 7, 8, 9, 12, 13, 14, 15, 16, 18, 19, 20, 21, 24, 25, 26, 27, 28, 30, 31, 32, 33, 35, 36, 37, 38, 39, 40, 42, 43, 44, 45, 48, 49, 50, 51, 52, 54, 56, 57, 60, 61, 62, 63, 64, 65, 66, 67
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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a(6) = 9 because B(9) = A053818(9) / A023896(9) = 159/27 = 53/9 (not integer).
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CROSSREFS
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Cf. A179871, A179873, A179874, A179875, A179876, A179877, A179878, A179879, A179880, A179882, A179883, A179884, A179885, A179886, A179887, A179890, A179891.
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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