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A153513
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Composites n such 2^n-2 and 3^n-3 are both divisible by n and n is not a Carmichael number (A002997).
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6
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2701, 18721, 31621, 49141, 83333, 83665, 88561, 90751, 93961, 104653, 107185, 176149, 204001, 226801, 228241, 276013, 282133, 534061, 563473, 574561, 622909, 653333, 665281
(list; graph; refs; listen; history; internal format)
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