Primes p such that 2*p-27 and 2*p+27 are positive primes.
17, 23, 37, 43, 83, 103, 127, 197, 257, 307, 313, 317, 337, 373, 457, 673, 677, 727
3 seqfan posts
Sun Mar 21 15:27:16 CET 2010 [seqfan] Re: A103807 and negative primes
Sun Mar 21 09:53:40 CET 2010 [seqfan] A103807 and negative primes
Sat Mar 20 13:25:30 CET 2010 [seqfan] Re: A174397 and primes with negative value.
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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