id:A066507 - OEIS Search Results

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Numbers n such that there is a solution to x^2 = 2^n mod(n).

+0
2

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; listen)

	OFFSET	`1,2`
	COMMENT	`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`
	CROSSREFS	`Cf. A058529, A001132, A057126.` `Sequence in context: A153282 A014661 A047511 this_sequence A030493 A165778 A139527` `Adjacent sequences: A066504 A066505 A066506 this_sequence A066508 A066509 A066510`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Jan 04 2002`
	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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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

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