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A006489
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n-6, n, n+6 are primes.
(Formerly M4770)
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9
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11, 13, 17, 23, 37, 47, 53, 67, 73, 103, 107, 157, 173, 233, 257, 263, 277, 353, 373, 563, 593, 607, 613, 647, 653, 733, 947, 977, 1097, 1103, 1123, 1187, 1223, 1283, 1297, 1367, 1433, 1453, 1487, 1493, 1607, 1613, 1663, 1747, 1753, 1783, 1867, 1873
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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REFERENCES
| "Prime Triplets" by Joseph Hirsch, Mathematics Teacher, 62 (1969), 467ff (see p. 471).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
| T. D. Noe, Table of n, a(n) for n=1..1000
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MATHEMATICA
| q=6*1; lst={}; Do[p=Prime[n]; If[PrimeQ[p-q]&&PrimeQ[p+q], AppendTo[lst, p]], {n, 7!}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Jun 17 2009]
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CROSSREFS
| Sequence in context: A048058 A048059 A106076 * A032621 A052031 A166009
Adjacent sequences: A006486 A006487 A006488 * A006490 A006491 A006492
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KEYWORD
| nonn,nice,easy
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
| More terms from James A. Sellers (sellersj(AT)math.psu.edu), Dec 24 1999
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