A055595 - OEIS

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A055595

Area of congruent triangles with integer sides and positive integer area, ordered by longest side, then second longest side and finally shortest side.

6, 12, 12, 24, 48, 30, 60, 54, 24, 84, 48, 36, 60, 120, 108, 66, 42, 96, 84, 126, 60, 108, 192, 90, 150, 84, 168, 120, 36, 204, 240, 210, 210, 60, 120, 216, 132, 300, 96, 336, 72, 192, 144, 240, 480, 294, 84, 252, 360, 432, 114, 156, 180, 210, 420, 120, 210, 420 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,1`
	LINKS	`A. Dendane, Heron's Formula For Area of a Triangle-Geometry Calculator`
	FORMULA	`a(n) = sqrt(s(n)(s(n)-A055592(n))(s(n)-A055593(n))*(s(n)-A055594(n))) where s(n) = (A055592(n)+A055593(n)+A055594(n))/2 i.e. half the perimeter of the triangle`
	CROSSREFS	`Cf. A055592, A055593, A055594, A055595.` `Sequence in context: A070149 A181798 A183688 * A132632 A063648 A063722` `Adjacent sequences: A055592 A055593 A055594 * A055596 A055597 A055598`
	KEYWORD	`nonn`
	AUTHOR	`Henry Bottomley (se16(AT)btinternet.com), May 26 2000`

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Last modified February 14 17:56 EST 2012. Contains 205654 sequences.