id:A028927 - OEIS Search Results

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Numbers represented by quadratic form with Gram matrix [ 3, 1; 1, 5 ].

+0
4

0, 3, 5, 6, 10, 12, 13, 19, 20, 21, 24, 26, 27, 35, 38, 40, 42, 45, 48, 52, 54, 59, 61, 69, 70, 75, 76, 80, 83, 84, 90, 91, 96, 101, 104, 108, 115, 117, 118, 122, 125, 131, 133, 138, 139, 140, 147, 150, 152, 157, 160, 166, 168, 171, 173, 180, 181, 182, 189, 192 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`a(x_i, x_j) = 3x_i^2 + 2x_ix_j + 5x_j^2, for all x_i >= 0, x_j any integer.`
	CROSSREFS	`Sequence in context: A065873 A072282 A047327 this_sequence A099190 A122772 A140449` `Adjacent sequences: A028924 A028925 A028926 this_sequence A028928 A028929 A028930`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`
	EXTENSIONS	`More terms from Larry Reeves (larryr(AT)acm.org), Mar 28 2000`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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