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Search: id:A155006
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| A155006 |
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Primes p such that (p-2)*(p+2)-+2*p are primes. |
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5
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| 5, 7, 13, 23, 37, 43, 73, 167, 233, 263, 433, 557, 587, 593, 607, 727, 857, 1153, 1597, 1627, 1753, 2143, 2663, 2713, 3433, 3607, 3863, 3947, 4027, 4363, 4423, 4673, 5147, 5477, 5623, 5807, 5903, 6277, 7237, 7333, 7577, 8287, 8647, 8837, 8887, 9043, 10067
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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3*7-10=11, 3*7+10=31,...
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MATHEMATICA
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lst={}; Do[p=Prime[n]; If[PrimeQ[(p-2)*(p+2)-2*p]&&PrimeQ[(p-2)*(p+2)+2*p], AppendTo[lst, p]], {n, 7!}]; lst
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CROSSREFS
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Cf. A125272, A053184, A038872, A141158, A038615, A098058, A038936, A089270, A140559, A154939
Sequence in context: A105874 A105904 A038901 this_sequence A078724 A155757 A027674
Adjacent sequences: A155003 A155004 A155005 this_sequence A155007 A155008 A155009
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KEYWORD
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nonn
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AUTHOR
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Vladimir Orlovsky (4vladimir(AT)gmail.com), Jan 18 2009
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