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A128548 Primes p such that p*q-p-q and p*q+p+q are prime where q=nextprime(p). +0
4
3, 5, 13, 43, 89, 163, 479, 643, 683, 773, 811, 953, 1109, 1399, 1471, 2213, 2741, 3253, 4583, 5153, 5923, 6427, 7649, 9059, 10151, 10531, 12301, 12373, 13553, 13903, 13921, 14723, 14869, 14929, 16183, 17123, 17681, 21149, 21377, 21569, 21587 (list; graph; listen)
OFFSET

1,1

COMMENT

Intersection of A126148 and A128546.

EXAMPLE

3*5-3-5=7 and 3*5+3+5=23 are prime, 5*7-5-23=7 and 5*7+5+7=47 are primes.

CROSSREFS

Cf. A096342, A126148, A128547.

Sequence in context: A032027 A005383 A057188 this_sequence A113606 A106879 A034375

Adjacent sequences: A128545 A128546 A128547 this_sequence A128549 A128550 A128551

KEYWORD

nonn

AUTHOR

Zak Seidov (zakseidov(AT)gmail.com), Mar 10 2007

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Last modified November 25 13:47 EST 2009. Contains 167481 sequences.


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