Primes p with p-2^e and p+2^e prime for some exponent e.
5, 7, 11, 67, 3277
2 seqfan posts
Sun Mar 14 21:50:33 CET 2010 [seqfan] Re: No "-1" value in A047949?
Sun Mar 14 19:29:14 CET 2010 [seqfan] Re: No "-1" value in A047949?
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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