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A066507
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Numbers n such that there is a solution to x^2 = 2^n mod(n).
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1
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1, 2, 4, 6, 7, 8, 10, 12, 14, 16, 17, 18, 20, 22, 23, 24, 26, 28, 30, 31, 32, 34, 36, 38, 40, 41, 42, 44, 46, 47, 48, 49, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 71, 72, 73, 74, 76, 78, 79, 80, 82, 84, 86, 88, 89, 90, 92, 94, 96, 97, 98, 100, 102, 103, 104, 106, 108, 110
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| All even numbers are in this sequence.
Odd terms in the sequence are numbers whose prime factors are +-1 mod 8 (A058529), i.e. odd n such that x^2 = 2 (mod n) has a solution. - Jason Earls (zevi_35711(AT)yahoo.com), Jan 22 2002
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CROSSREFS
| Cf. A058529, A001132, A057126.
Sequence in context: A153282 A014661 A047511 * A015932 A030493 A165778
Adjacent sequences: A066504 A066505 A066506 * A066508 A066509 A066510
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KEYWORD
| nonn
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AUTHOR
| Benoit Cloitre (benoit7848c(AT)orange.fr), Jan 04 2002
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EXTENSIONS
| Corrected by Vladeta Jovovic (vladeta(AT)eunet.rs), Jan 22 2002
More terms from Jason Earls (zevi_35711(AT)yahoo.com), Jan 22 2002
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