id:A055052 - OEIS Search Results

Search: id:A055052

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Numbers of the form 4^i*(8j+7) or 4^i*(8j+5).

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5, 7, 13, 15, 20, 21, 23, 28, 29, 31, 37, 39, 45, 47, 52, 53, 55, 60, 61, 63, 69, 71, 77, 79, 80, 84, 85, 87, 92, 93, 95, 101, 103, 109, 111, 112, 116, 117, 119, 124, 125, 127, 133, 135, 141, 143, 148, 149, 151, 156, 157, 159, 165, 167, 173, 175 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Numbers not of the form x^2+2y^2+8z^2.`
	REFERENCES	`L. J. Mordell, A new Waring's problem with squares of linear forms, Quart. J. Math., 1 (1930), 276-288 (see p. 283).`
	CROSSREFS	`Sequence in context: A166163 A050079 A066980 this_sequence A047550 A064465 A152810` `Adjacent sequences: A055049 A055050 A055051 this_sequence A055053 A055054 A055055`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Jun 02 2000`

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

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