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Search: id:A070137
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| 17, 212, 493, 1297, 2574, 4298, 5251, 14414, 16365, 21231, 26125, 39056, 42597, 55042, 63770
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Right integer triangles have integer areas: see A070143.
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LINKS
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R. Zumkeller, Integer-sided triangles
Eric Weisstein's World of Mathematics, Heronian Triangle.
Eric Weisstein's World of Mathematics, Right Triangle.
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EXAMPLE
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a(3)=493: [A070080(493), A070081(493), A070082(493)]=[8,15,17], A070084(493)=gcd(8,15,17)=1, A070085(493)=8^2+15^2-17^2=64+225-289=0.
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CROSSREFS
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Cf. A070109, A070136.
Adjacent sequences: A070134 A070135 A070136 this_sequence A070138 A070139 A070140
Sequence in context: A081035 A016299 A016250 this_sequence A021054 A016246 A009441
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KEYWORD
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nonn
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AUTHOR
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Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 05 2002
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