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A000355 Primes == 3, 9, 11 (mod 20) such that 2p+1 is also prime. +0
3
3, 11, 23, 29, 83, 89, 131, 191, 251, 431, 443, 491, 509, 683, 743, 809, 911, 1031, 1049, 1103, 1223, 1229, 1289, 1409, 1451, 1511, 1583, 1811, 1889, 1931, 2003, 2063, 2069, 2129, 2351, 2543, 2549, 2903, 2963, 2969, 3023, 3329, 3389, 3449, 3491, 3623, 3803 (list; graph; listen)
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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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