|
| |
|
|
A070137
|
|
Numbers n such that [A070080(n), A070081(n), A070082(n)] is a right integer triangle with relatively prime side lengths.
|
|
5
| |
|
|
17, 212, 493, 1297, 2574, 4298, 5251, 14414, 16365, 21231, 26125, 39056, 42597, 55042, 63770
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
COMMENTS
| Right integer triangles have integer areas: see A070143.
|
|
|
LINKS
| R. Zumkeller, Integer-sided triangles
Eric Weisstein's World of Mathematics, Heronian Triangle.
Eric Weisstein's World of Mathematics, Right Triangle.
|
|
|
EXAMPLE
| 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.
|
|
|
CROSSREFS
| Cf. A070109, A070136.
Sequence in context: A081035 A016299 A016250 * A021054 A016246 A009441
Adjacent sequences: A070134 A070135 A070136 * A070138 A070139 A070140
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 05 2002
|
| |
|
|
