This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A009041 #20 Apr 19 2018 10:06:31 %S A009041 3,4,5,6,7,8,8,9,9,10,11,12,12,12,12,13,14,15,15,15,15,16,16,16,17,18, %T A009041 18,19,20,20,20,20,21,21,21,21,22,23,24,24,24,24,24,24,24,25,25,26,27, %U A009041 27,27,28,28,28,28,29,30,30,30,30,31,32,32,32,32,33,33,33,33,34,35,35,35,35,36 %N A009041 Ordered legs of Pythagorean triangles. %C A009041 Order the set of all Pythagorean triangles. This is the sequence of the first leg. %C A009041 Sorted union of A009004 and A009012 retaining duplicates. - _Sean A. Irvine_, Apr 18 2018 %H A009041 Ron Knott, <a href="http://www.maths.surrey.ac.uk/hosted-sites/R.Knott/Pythag/pythag.html">Pythagorean Triples and Online Calculators</a> %e A009041 First legs of (3,4,5), (4,3,5), (5,12,13), (6,8,10), (7,24,25), (8,6,10), (8,15,17), (9,12,15), (9,40,41), ... - _Michael Somos_, Mar 03 2004 %Y A009041 Cf. A009004, A009012. %K A009041 nonn %O A009041 1,1 %A A009041 _David W. Wilson_