id:A139640 - OEIS Search Results

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Numbers of the form of 4x^2 - 4xy + 7y^2 (=24k+7) but not of the form 4x^2 + 4xy + 7y^2.

+0
3

151, 487, 727, 751, 1039, 1063, 1399, 1471, 1759, 1783, 2287, 2647, 2671, 2767, 3343, 3463, 3919, 4111, 4423, 4663, 4903, 4999, 5167, 5407, 5791, 6607, 6703, 6823, 7159, 7351, 7639, 7879, 8191, 8263, 8311, 8839, 9127, 9151, 9439, 9967, 10111, 10711 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Numbers which occur in A107006 but not in A107005.`
	CROSSREFS	`Cf. A107005, A107006.` `Sequence in context: A142361 A142506 A164622 this_sequence A130870 A143012 A060889` `Adjacent sequences: A139637 A139638 A139639 this_sequence A139641 A139642 A139643`
	KEYWORD	`nonn`
	AUTHOR	`Artur Jasinski (grafix(AT)csl.pl), Apr 28 2008`
	EXTENSIONS	`More terms from T. D. Noe (noe(AT)sspectra.com), May 01 2008`

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

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