id:A055047 - OEIS Search Results

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Numbers of the form 9^i*(3*j+1).

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1, 4, 7, 9, 10, 13, 16, 19, 22, 25, 28, 31, 34, 36, 37, 40, 43, 46, 49, 52, 55, 58, 61, 63, 64, 67, 70, 73, 76, 79, 81, 82, 85, 88, 90, 91, 94, 97, 100, 103, 106, 109, 112, 115, 117, 118, 121, 124, 127, 130, 133, 136, 139, 142, 144, 145, 148, 151 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`The numbers not of the form 2x^2+3y^2+3z^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: A010389 A010415 A010442 this_sequence A010454 A053169 A007656` `Adjacent sequences: A055044 A055045 A055046 this_sequence A055048 A055049 A055050`
	KEYWORD	`nonn`
	AUTHOR	`njas, Jun 01 2000`

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.

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