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A007693 Numbers n such that n and 6n+1 are primes.
(Formerly M0656)
+0
14
2, 3, 5, 7, 11, 13, 17, 23, 37, 47, 61, 73, 83, 101, 103, 107, 131, 137, 151, 173, 181, 233, 241, 257, 263, 271, 277, 283, 293, 311, 313, 331, 347, 367, 373, 397, 443, 461, 467, 503, 557, 577, 593, 601, 607, 641, 653, 661, 683, 727, 751, 761, 773, 787, 797, 853 (list; graph; listen)
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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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