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A124521
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Numbers k such that 16*k - 1 and 16*k + 1 are twin primes.
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4
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12, 15, 27, 72, 93, 117, 132, 162, 168, 195, 198, 210, 258, 267, 300, 327, 330, 345, 435, 468, 642, 765, 813, 855, 903, 912, 960, 978, 993, 1128, 1143, 1182, 1290, 1350, 1353, 1365, 1392, 1398, 1440, 1632, 1680, 1713, 1737, 1797, 1848, 1860, 1947, 1953, 1962
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OFFSET
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1,1
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LINKS
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EXAMPLE
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12 is in the sequence since 16*12 - 1 = 191 and 16*12 + 1 = 193 are twin primes.
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MAPLE
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MATHEMATICA
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Select[Range[2000], And @@ PrimeQ[{-1, 1} + 16# ] &] (* Ray Chandler, Nov 16 2006 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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