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Search: id:A158014
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| A158014 |
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Primes p such that (p-1)/8 is also prime. |
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+0
1
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| 17, 41, 89, 137, 233, 569, 809, 857, 1049, 1097, 1193, 1433, 1913, 2153, 2777, 3209, 3449, 3593, 3833, 3929, 4073, 4457, 4793, 4937, 5273, 5417, 6089, 6473, 6569, 6857, 7433, 7529, 7577, 7817, 9209, 9497, 9833
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OFFSET
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1,1
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FORMULA
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a(n)=8*A023228(n)+1. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Mar 15 2009]
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MATHEMATICA
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Flatten[Table[If[PrimeQ[n] && PrimeQ[(n - 1)/8], n, {}], {n, 1, 10000}]]
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CROSSREFS
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Cf. A005385 for (p-1)/2, A090866 for (p-1)/4, A051644 for (p-1)/6, A055781 for (p-1)/10.
Sequence in context: A054819 A087877 A107181 this_sequence A139879 A070179 A155072
Adjacent sequences: A158011 A158012 A158013 this_sequence A158015 A158016 A158017
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KEYWORD
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nonn
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AUTHOR
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Roger L. Bagula (rlbagulatftn(AT)yahoo.com), Mar 11 2009
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EXTENSIONS
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Edited by the Associate Editors of the OEIS, Apr 22 2009
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