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Search: id:A087695
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| A087695 |
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Numbers n such that n +/- 3 are both prime. |
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+0
17
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| 8, 10, 14, 16, 20, 26, 34, 40, 44, 50, 56, 64, 70, 76, 86, 100, 104, 106, 110, 134, 154, 160, 170, 176, 194, 196, 226, 230, 236, 254, 260, 266, 274, 280, 310, 314, 334, 350, 356, 370, 376, 386, 436, 446, 460, 464, 506, 544, 560, 566, 574, 590, 596
(list; graph; listen)
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OFFSET
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1,1
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MAPLE
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ZL:=[]:for p from 1 to 600 do if (isprime(p) and isprime(p+6) ) then ZL:=[op(ZL), (p+(p+6))/2]; fi; od; print(ZL); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Mar 07 2007
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MATHEMATICA
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lst={}; Do[If[PrimeQ[n-3]&&PrimeQ[n+3], AppendTo[lst, n]], {n, 10^3}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Sep 08 2008]
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CROSSREFS
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Cf. A014574, A087678-A087683, A087695-A087697, A088763.
Equals A046117 - 3.
Sequence in context: A167692 A163628 A060864 this_sequence A134321 A027693 A100718
Adjacent sequences: A087692 A087693 A087694 this_sequence A087696 A087697 A087698
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KEYWORD
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easy,nonn
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AUTHOR
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Zak Seidov (zakseidov(AT)yahoo.com), Sep 27 2003
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