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Search: id:A161725
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| A161725 |
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Primes n such that also n+30 and n-30 are primes. |
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+0
1
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| 37, 41, 43, 53, 59, 67, 71, 73, 83, 97, 101, 109, 127, 137, 167, 181, 193, 197, 211, 227, 241, 263, 281, 307, 337, 367, 379, 389, 409, 419, 431, 449, 461, 479, 491, 571, 577, 587, 601, 617, 631, 643, 647, 661, 739, 757, 827, 853, 857, 907, 911, 937, 941, 967
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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The prime n=37 is in the sequence because 37-30=7 and 37+30=67 are also primes.
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MATHEMATICA
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q=6*5; lst={}; Do[p=Prime[n]; If[PrimeQ[p-q]&&PrimeQ[p+q], AppendTo[lst, p]], {n, 7!}]; lst
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CROSSREFS
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Cf. A006489, A137796, A161723, A161724, A052243.
Sequence in context: A069963 A071855 A137675 this_sequence A100722 A093690 A090263
Adjacent sequences: A161722 A161723 A161724 this_sequence A161726 A161727 A161728
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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), Jun 17 2009
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EXTENSIONS
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Definition edited by Emeric Deutsch (deutsch(AT)duke.poly.edu), Jun 28 2009
Moved comment to the examples - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 23 2009
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