**Primes p such that p + 4 is also prime.**

*3, 7, 13, 19, 37, 43, 67, 79, 97, 103, 109, 127, 163, 193, 223, 229, 277, 307, 313, 349*

*5 seqfan posts*

Index of A-numbers in seqfan: by ascending order by month by frequency by keyword

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