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Search: id:A091317
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| A091317 |
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Primes p which divide 2^n+1 for some n. |
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+0
2
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| 2, 3, 5, 11, 13, 17, 19, 29, 37, 41, 43, 53, 59, 61, 67, 83, 97, 101, 107, 109, 113, 131, 137, 139, 149, 157, 163, 173, 179, 181, 193, 197, 211, 227, 229, 241, 251, 257, 269, 277, 281, 283, 293, 307, 313, 317, 331, 347, 349, 353, 373, 379, 389, 397, 401, 409, 419, 421, 433
(list; graph; listen)
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OFFSET
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1,1
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REFERENCES
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H. H. Hasse, Ueber die Dichte der Primzahlen p, ..., Math. Ann., 168 (1966), 19-23.
L. C. Lagarias, The set of primes dividing the Lucas numbers has density 2/3, Pacific J. Math., 118 (1985), 449-461.
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LINKS
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T. D. Noe, Table of n, a(n) for n=1..1000
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FORMULA
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Has density 17/24 (Hasse)
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CROSSREFS
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Complement in primes of A014663.
Sequence in context: A126148 A038933 A042998 this_sequence A088254 A089191 A038947
Adjacent sequences: A091314 A091315 A091316 this_sequence A091318 A091319 A091320
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KEYWORD
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nonn
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AUTHOR
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njas, Feb 21 2004
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