Numbers n such that n and 2n-3 are primes.
3, 5, 7, 11, 13, 17, 23, 31, 37, 41, 43, 53, 67, 71, 83, 97, 101, 107, 113, 127, 137, 157
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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