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A068968 Sides of integer Heronian triangles [A068967(n), prime(A068967(n)), a(n)] with area A068969(n). 3
4, 35, 120, 113, 130, 260, 319, 252, 372, 609, 595, 1905, 2020, 5712, 5790, 6148, 7735, 8789, 13651, 14126, 14576, 14725, 21254, 19856, 25907, 29603 (list; graph; refs; listen; history; internal format)
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) = 162*125*5*32 = 3240000 = 1800*1800, therefore A068969(5) = 1800.

CROSSREFS

Sequence in context: A193994 A097382 A003349 * A185592 A011195 A025195

Adjacent sequences:  A068965 A068966 A068967 * A068969 A068970 A068971

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Mar 30 2002

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Last modified February 15 17:13 EST 2012. Contains 205828 sequences.