id:A099831 - OEIS Search Results

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Perimeters of Pythagorean triangles that can be constructed in exactly 2 different ways.

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60, 84, 90, 132, 144, 210, 264, 270, 288, 300, 312, 330, 390, 408, 432, 440, 450, 456, 462, 468, 510, 520, 546, 552, 570, 576, 588, 612, 616, 680, 684, 690, 700, 728, 760, 770, 800, 810, 816, 828, 870, 910, 912, 918, 920, 952, 1044, 1064, 1100, 1104, 1116 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`Ron Knott, Pythagorean Triples and Online Calculators` `Eric Weisstein's World of Mathematics, Pythagorean Triple.` `Index entries related to Pythagorean Triples.`
	EXAMPLE	`a(1)=60 = 10+24+26 = 15+20+25; a(2)=84 = 12+35+37 = 21+28+35.`
	CROSSREFS	`Adjacent sequences: A099828 A099829 A099830 this_sequence A099832 A099833 A099834` `Sequence in context: A009129 A085987 A086974 this_sequence A138604 A086975 A073461`
	KEYWORD	`nonn`
	AUTHOR	`Hugo Pfoertner (hugo(AT)pfoertner.org), Oct 27 2004`

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Last modified October 9 14:06 EDT 2008. Contains 144831 sequences.

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