id:A010814 - OEIS Search Results

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Perimeters of integer-sided right triangles.

+0
8

12, 24, 30, 36, 40, 48, 56, 60, 70, 72, 80, 84, 90, 96, 108, 112, 120, 126, 132, 140, 144, 150, 154, 156, 160, 168, 176, 180, 182, 192, 198, 200, 204, 208, 210, 216, 220, 224, 228, 234, 240, 252, 260, 264, 270, 276, 280, 286, 288, 300, 306, 308, 312, 320, 324 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`A number n is in this sequence iff n is a multiple of some term in A024364.`
	LINKS	`Ron Knott, Pythagorean Triples and Online Calculators` `Index entries related to Pythagorean Triples.`
	MAPLE	`isA010814 := proc(an) local a::integer, b::integer, c::integer ; for c from 1 to floor(an/2) do for a from floor(c/sqrt(2)) to c-1 do if issqr(c^2-a^2) then b := sqrt(c^2-a^2) ; if a+b+c = an then RETURN(true) ; fi ; fi ; od ; od : RETURN(false) ; end : for n from 3 to 400 do if isA010814(n) then printf("%d, ", n) ; fi ; od ; - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 08 2006`
	CROSSREFS	`Twice A005279.` `Sequence in context: A074697 A027854 A009096 this_sequence A098714 A108938 A085236` `Adjacent sequences: A010811 A010812 A010813 this_sequence A010815 A010816 A010817`
	KEYWORD	`nonn`
	AUTHOR	`manvel(AT)lagrange.math.colostate.edu (Ben Manvel)`
	EXTENSIONS	`More terms from Ray Chandler (rayjchandler(AT)sbcglobal.net), Mar 13 2004`

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Last modified December 4 23:11 EST 2009. Contains 170347 sequences.

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