id:A070138 - OEIS Search Results

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Number of integer triangles with an integer area having relatively prime sides a, b and c such that a+b+c=n.

+0
4

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 2, 0, 0, 0, 1, 0, 2, 0, 1, 0, 0, 0, 1, 0, 2, 0, 0, 0, 3, 0, 1, 0, 0, 0, 1, 0, 0, 0, 3, 0, 1, 0, 1, 0, 2, 0, 1, 0, 0, 0, 1, 0, 1, 0, 2, 0, 0, 0, 5, 0, 0, 0, 0, 0, 3 (list; graph; listen)

	OFFSET	`1,36`
	LINKS	`Eric Weisstein's World of Mathematics, Heronian Triangle.` `R. Zumkeller, Integer-sided triangles`
	CROSSREFS	`Cf. A051516, A070088, A070109, A070143.` `Sequence in context: A135767 A070203 A070201 this_sequence A024153 A079127 A056674` `Adjacent sequences: A070135 A070136 A070137 this_sequence A070139 A070140 A070141`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 05 2002`
	EXTENSIONS	`Corrected by T. D. Noe (noe(AT)sspectra.com), Jun 17 2004`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

AT&T Labs Research