id:A095972 - OEIS Search Results

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a(n) is the number of quadratic nonresidues modulo n.

+0
3

0, 0, 1, 2, 2, 2, 3, 5, 5, 4, 5, 8, 6, 6, 9, 12, 8, 10, 9, 14, 13, 10, 11, 18, 14, 12, 16, 20, 14, 18, 15, 25, 21, 16, 23, 28, 18, 18, 25, 31, 20, 26, 21, 32, 33, 22, 23, 40, 27, 28, 33, 38, 26, 32, 37, 44, 37, 28, 29, 48, 30, 30, 47, 52, 44, 42, 33, 50, 45, 46, 35, 60, 36, 36, 53 (list; graph; listen)

	OFFSET	`1,4`
	LINKS	`Eric Weisstein's World of Mathematics, Quadratic Nonresidue`
	CROSSREFS	`Cf. A096013.` `Sequence in context: A071867 A126337 A036355 this_sequence A091974 A029073 A058618` `Adjacent sequences: A095969 A095970 A095971 this_sequence A095973 A095974 A095975`
	KEYWORD	`nonn`
	AUTHOR	`Cino Hilliard (hillcino368(AT)gmail.com), Jul 21 2004`
	EXTENSIONS	`Edited by Don Reble (djr(AT)nk.ca), May 07 2006`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

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