Triangles and angles

[Neil Fernandez]

In message <8C8AF00C7DD39C1-109C-478F at FWM-M36.sysops.aol.com>,
franktaw at netscape.net writes

>Consider all triangles with integral sides, no side longer than n.
>
>How many different triangles are there, up to similarity?  I.e., how 
>many triples a,b,c with a<=b<=c<a+b, c <= n, and gcd(a,b,c) = 1?

<http://www.research.att.com/~njas/sequences/A051493>

Neil

-- 
Neil Fernandez