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Search: id:A059266
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| A059266 |
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Numbers n such that 4^n - 3 is prime. |
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+0
2
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| 2, 3, 5, 6, 7, 10, 11, 12, 47, 58, 61, 75, 87, 133, 168, 226, 347, 425, 868, 1977, 2815, 3378, 4385, 5286, 7057, 7200, 8230, 8340, 13175, 17226, 18276
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Contains exactly the halved even terms of A050414. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 26 2008
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REFERENCES
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425 and 868 found by Andrey Kulsha (Andrey_601(AT)tut.by), Feb 02, 2001.
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CROSSREFS
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Cf. A000040.
Adjacent sequences: A059263 A059264 A059265 this_sequence A059267 A059268 A059269
Sequence in context: A028781 A136149 A101882 this_sequence A119024 A048839 A122144
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KEYWORD
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nonn
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AUTHOR
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G. L. Honaker, Jr. (honak3r(AT)bvunet.net), Jan 23 2001
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EXTENSIONS
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More terms (not certified prime) from Jason Earls (jcearls(AT)cableone.net), Jan 04 2002
9 more terms from Ryan Propper (rpropper(AT)cs.stanford.edu), Feb 27 2008
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