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Search: id:A162905
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| A162905 |
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Primes of form p^2-6, p also a prime. |
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+0
1
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| 3, 19, 43, 163, 283, 523, 2203, 2803, 4483, 5323, 6883, 9403, 11443, 12763, 27883, 37243, 38803, 69163, 85843, 100483, 134683, 139123, 146683, 208843, 214363, 218083, 237163, 253003, 310243, 351643, 368443, 413443, 418603, 452923, 458323
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OFFSET
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1,1
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FORMULA
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a(n) = (A137270(n))^2-6.
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MATHEMATICA
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f[n_]:=n^2-6; lst={}; Do[p=Prime[n]; If[PrimeQ[f[p]], AppendTo[lst, f[p]]], {n, 7!}]; lst
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CROSSREFS
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Sequence in context: A146664 A103176 A028880 this_sequence A063553 A099007 A023280
Adjacent sequences: A162902 A162903 A162904 this_sequence A162906 A162907 A162908
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KEYWORD
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nonn
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AUTHOR
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Vladimir Orlovsky (4vladimir(AT)gmail.com), Jul 16 2009
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EXTENSIONS
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Cross-reference turned into formula by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 27 2009
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