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A005382 Numbers n such that n and 2n-1 are primes.
(Formerly M0849)
+0
58
2, 3, 7, 19, 31, 37, 79, 97, 139, 157, 199, 211, 229, 271, 307, 331, 337, 367, 379, 439, 499, 547, 577, 601, 607, 619, 661, 691, 727, 811, 829, 877, 937, 967, 997, 1009, 1069, 1171, 1237, 1279, 1297, 1399, 1429, 1459, 1531, 1609, 1627, 1657 (list; graph; listen)
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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.


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