id:A068967 - OEIS Search Results

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Numbers that define integer Heronian triangles [a(n), prime(a(n)), A068968(n)] with area A068969(n).

+0
3

3, 12, 25, 30, 37, 51, 60, 65, 65, 100, 116, 260, 273, 761, 761, 825, 884, 1092, 1476, 1695, 1695, 1752, 2374, 2415, 3048, 3552 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`Eric Weisstein's World of Mathematics, Heronian Triangle.`
	EXAMPLE	`a(5) = 37: [37, A000040(37), A068968(5)] = [37,157,130], with s = (36+157+130)/2 = 162: Area^2 = s(s-37)(s-157)(s-130) = 162125532 = 3240000 = 1800*1800, therefore A068969(5) = 1800.`
	CROSSREFS	`Sequence in context: A047166 A076506 A009776 this_sequence A071355 A110859 A125614` `Adjacent sequences: A068964 A068965 A068966 this_sequence A068968 A068969 A068970`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Mar 30 2002`

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Last modified November 25 14:49 EST 2009. Contains 167514 sequences.

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