id:A123065 - OEIS Search Results

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Numbers primitively represented by the quadratic form 2 x^2 + xy + 4 y^2.

+0
5

2, 4, 5, 7, 10, 14, 16, 19, 20, 25, 28, 32 (list; graph; listen)

	OFFSET	`1,1`
	REFERENCES	`J. H. Conway, The Sensual (Quadratic) Form, M.A.A., 1997, p. 82.`
	CROSSREFS	`Cf. A123063, A123064, A123067, A123068.` `Adjacent sequences: A123062 A123063 A123064 this_sequence A123066 A123067 A123068` `Sequence in context: A062463 A056716 A023181 this_sequence A115334 A035547 A018598`
	KEYWORD	`nonn`
	AUTHOR	`njas, Sep 27 2006`

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.