id:A045897 - OEIS Search Results

Search: id:A045897

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Has both a primitive and imprimitive representation as x^2+xy+y^2.

+0
6

49, 147, 169, 343, 361, 507, 637, 931, 961, 1029, 1083, 1183, 1369, 1519, 1813, 1849, 1911, 2107, 2197, 2401, 2527, 2793, 2883, 2989, 3211, 3283, 3549, 3577, 3721, 3871, 4107, 4459, 4489, 4557, 4693, 4753, 5047, 5239, 5329, 5341, 5439, 5547, 6223, 6241 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`Index entries for sequences related to A2 = hexagonal = triangular lattice`
	EXAMPLE	`49 = 7^2 = 5^2+5.3+3^2.`
	CROSSREFS	`Cf. A004611, A003136.` `Sequence in context: A087354 A098442 A088535 this_sequence A027469 A162942 A044381` `Adjacent sequences: A045894 A045895 A045896 this_sequence A045898 A045899 A045900`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`
	EXTENSIONS	`Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Jan 29 2009`

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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.

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