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A064221 Least k such that k*12^n +/- 1 are twin primes. +0
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4, 1, 3, 19, 33, 4, 165, 35, 150, 35, 205, 35, 63, 435, 48, 4, 223, 399, 388, 149, 125, 86, 335, 491, 565, 876, 73, 250, 85, 526, 217, 139, 557, 676, 488, 629, 592, 1290, 2110, 366, 140, 2461, 6198, 6476, 2033, 751, 7258, 2054, 2275, 1345, 445 (list; graph; listen)
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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.


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