id:A120571 - OEIS Search Results

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A120571

2n^4+6n^2+4 = 2(n^2+1)(n^2+2).

+0
2

12, 60, 220, 612, 1404, 2812, 5100, 8580, 13612, 20604, 30012, 42340, 58140, 78012, 102604, 132612, 168780, 211900, 262812, 322404, 391612, 471420, 562860, 667012, 785004, 918012, 1067260, 1234020, 1419612, 1625404, 1852812, 2103300, 2378380 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Largest perimeter of any triangle with integer sides a<=b<=c and inradius n. Triangle has sides (n^2+2,n^4+2n^2+1,n^4+3n^2+1).`
	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: A012581 A012288 A012582 this_sequence A086950 A074433 A114307` `Adjacent sequences: A120568 A120569 A120570 this_sequence A120572 A120573 A120574`
	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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