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Search: id:A139487
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| A139487 |
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Numbers n such that 8n+7 is prime. |
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+0
4
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| 0, 2, 3, 5, 8, 9, 12, 15, 18, 20, 23, 24, 27, 29, 32, 33, 38, 44, 45, 47, 53, 54, 57, 59, 60, 62, 74, 75, 78, 80, 89, 90, 92, 93, 102, 104, 107, 110, 113, 114, 120, 122, 123, 128, 129, 132, 135, 137, 143, 152, 153, 159, 162, 164, 165, 170, 174, 177, 179, 180, 183, 185
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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For numbers k such that
8k+1 is prime see A005123, primes see A007519
8k+3 is prime see A005124, primes see A007520
8k+5 is prime see A105133, primes see A007521
8k+7 is prime see A139487, primes see A007522
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MATHEMATICA
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a = {}; Do[If[PrimeQ[8 n + 7], AppendTo[a, n]], {n, 0, 300}]; a
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CROSSREFS
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Cf. A007519, A007520, A007521, A007522, A005123, A005124, A105133.
Sequence in context: A122933 A091513 A060138 this_sequence A162586 A035422 A058237
Adjacent sequences: A139484 A139485 A139486 this_sequence A139488 A139489 A139490
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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 23 2008
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