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1, 6, 15, 21, 35, 11392, 1688, 10048, 53632, 101632, 5272, 2632, 6616, 50368, 1386, 102016, 1716, 1722, 161152, 4356, 11992, 92992, 4716, 101312, 589312, 2634, 644608, 3538, 3778, 898048, 30896, 16312, 3610, 3510, 4702, 1432576, 4626, 606976, 8908, 3738, 343936
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OFFSET
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1,2
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LINKS
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FORMULA
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MATHEMATICA
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ucototient[n_] := n - Times @@ (Power @@@ FactorInteger[n] - 1); ucototient[1] = 0; With[{max = 3000}, sol = solnum = Table[0, {n, 1, max}]; Do[If[(i = ucototient[k]) <= max, sol[[i]] = k; solnum[[i]]++], {k, 2, max^2}]; Join[{1}, sol[[Position[solnum, 1] // Flatten]]]]
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CROSSREFS
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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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