id:A120570 - OEIS Search Results

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A120570

Smallest perimeter of triangles with integer sides and inradius n.

+0
2

12, 24, 32, 42, 60, 64, 84, 84, 96, 108, 132, 126, 156, 162, 156, 168, 204, 190, 228, 210, 220, 240, 276, 250, 300, 312, 288, 294, 348, 312, 372, 336, 352, 408, 372, 378, 444, 456, 416, 420, 492, 440, 516, 462, 468, 552, 564, 500, 588, 540, 544, 546, 636, 570 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Empirically, 6*sqrt(3) <= a(n)/n <= 12. The lower bound is provably tight.` `a(n) == 0 (mod 4).`
	LINKS	`David W. Wilson, Table of n, a(n) for n = 1..10000`
	CROSSREFS	`See A120062 for sequences related to integer-sided triangles with integer inradius n.` `Sequence in context: A082801 A103590 A081699 this_sequence A098113 A083547 A009185` `Adjacent sequences: A120567 A120568 A120569 this_sequence A120571 A120572 A120573`
	KEYWORD	`nonn`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net), Jun 17 2006`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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