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%I #11 Jan 21 2020 12:16:55
%S 4,12,15,21,24,35,40,45,55,56,60,63,72,77,80,84,91,99,105,112,117,120,
%T 132,140,143,144,153,156,165,168,171,176,180,187,195,208,209,220,221,
%U 224,231,240,247,252,253,255,260,264,272,273,275,285,288,299,304,308
%N Consider primitive Pythagorean triangles (A^2 + B^2 = C^2, (A, B) = 1, A <= B); sequence gives values of B, sorted and duplicates removed (first differs from A020883 at 420).
%H Ray Chandler, <a href="/A024354/b024354.txt">Table of n, a(n) for n = 1..10000</a>
%H Ron Knott, <a href="http://www.maths.surrey.ac.uk/hosted-sites/R.Knott/Pythag/pythag.html">Pythagorean Triples and Online Calculators</a>
%Y Cf. A020883.
%K nonn
%O 1,1
%A _David W. Wilson_
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