A087780 - OEIS

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A087780

Number of non-congruent solutions to x^2 == 2 mod n.

1, 1, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 2, 0, 0, 2, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 2, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 2, 2, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 2, 0, 0, 0, 0, 0, 2, 0, 0, 2, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 2, 0, 0, 2, 2, 0, 0, 0, 0, 2, 0, 0 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,7`
	CROSSREFS	`Cf. A060594.` `Sequence in context: A085859 A086016 A103270 * A082523 A186034 A083935` `Adjacent sequences: A087777 A087778 A087779 * A087781 A087782 A087783`
	KEYWORD	`mult,nonn`
	AUTHOR	`Yuval Dekel (dekelyuval(AT)hotmail.com), Oct 06 2003`
	EXTENSIONS	`More terms from David Wasserman (wasserma(AT)spawar.navy.mil), Jun 17 2005`

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Last modified February 16 20:59 EST 2012. Contains 205968 sequences.