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Search: id:A158018
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| A158018 |
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Primes such that p : (p - 1)/12 is also prime. |
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+0
1
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| 37, 61, 157, 229, 277, 349, 373, 709, 733, 853, 877, 997, 1069, 1213, 1237, 1669, 1789, 2293, 2389, 2677, 2749, 2797, 3229, 3253, 3373, 3517, 3733, 4549, 4597, 4813, 4909, 5197, 5557, 5749, 6037, 6277, 6829, 7213, 7573, 7717, 7933, 8293, 8629, 9013, 9133
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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The sequence of primes types gives :(p-1)/2,(p-1)/4,(p-1)/6,(p-1)/8,(p-1)/10,(p-1)/12...:
gives the sequences:A005385, A090866, A051644, A055781
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FORMULA
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a(n)=12*A075704(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)/12], n, {}], {n, 1, 10000}]]
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CROSSREFS
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A005385, A090866, A051644, A055781
Sequence in context: A139960 A103946 A107142 this_sequence A117475 A145486 A121764
Adjacent sequences: A158015 A158016 A158017 this_sequence A158019 A158020 A158021
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KEYWORD
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nonn,uned
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AUTHOR
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Roger L. Bagula (rlbagulatftn(AT)yahoo.com), Mar 11 2009
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