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A057683 Numbers n such that n^2+n+1, n^3+n+1 and n^4+n+1 are all prime. +0
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1, 2, 5, 6, 12, 69, 77, 131, 162, 426, 701, 792, 1221, 1494, 1644, 1665, 2129, 2429, 2696, 3459, 3557, 3771, 4350, 4367, 5250, 5670, 6627, 7059, 7514, 7929, 8064, 9177, 9689, 10307, 10431, 11424, 13296, 13299, 13545, 14154, 14286, 14306, 15137 (list; graph; listen)
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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.


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