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Search: id:A139406
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| A139406 |
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Numbers k such that 8k+1 and 8k+5 are primes. |
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+0
2
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| 12, 24, 39, 57, 84, 96, 117, 126, 162, 186, 201, 234, 249, 267, 297, 309, 327, 336, 354, 357, 369, 402, 432, 441, 459, 462, 474, 516, 519, 564, 591, 621, 654, 696, 711, 717, 732, 777, 822, 942, 969, 984, 1011, 1029, 1086, 1092, 1116, 1167, 1179, 1272, 1341
(list; graph; listen)
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OFFSET
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1,1
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MATHEMATICA
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a = {}; Do[If[PrimeQ[8 n + 1] && PrimeQ[8 n + 5], AppendTo[a, n]], {n, 1, 1000}]; a
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CROSSREFS
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Cf. A001109, A125821, A125822, A139402, A139404, A139405, A139407.
Sequence in context: A091193 A098242 A101425 this_sequence A140831 A126855 A102749
Adjacent sequences: A139403 A139404 A139405 this_sequence A139407 A139408 A139409
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KEYWORD
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nonn
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AUTHOR
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Artur Jasinski (grafix(AT)csl.pl), Apr 19 2008
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