id:A092572 - OEIS Search Results

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Numbers of the form x^2+3y^2 where x and y are positive integers.

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26

4, 7, 12, 13, 16, 19, 21, 28, 31, 36, 37, 39, 43, 48, 49, 52, 57, 61, 63, 64, 67, 73, 76, 79, 84, 91, 93, 97, 100, 103, 108, 109, 111, 112, 117, 124, 127, 129, 133, 139, 144, 147, 148, 151, 156, 157, 163, 169, 171, 172, 175, 181, 183, 189, 192, 193, 196, 199 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Superset of primes of the form 6n+1 (A002476).` `It seems that all integer solutions of ((a+b)^3 - (a-b)^3) / (2b) = c^3 have c = x^2 + 3y^2. - Juergen Buchmueller (pullmoll(AT)t-online.de), Apr 04 2008`
	LINKS	`Eric Weisstein's World of Mathematics, Eulers 6n Plus 1 Theorem`
	CROSSREFS	`Cf. A002476, A092573, A092575.` `Sequence in context: A061956 A072732 A083487 this_sequence A092574 A058271 A161843` `Adjacent sequences: A092569 A092570 A092571 this_sequence A092573 A092574 A092575`
	KEYWORD	`nonn`
	AUTHOR	`Eric Weisstein (eric(AT)weisstein.com), Feb 28, 2004`

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

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