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 A093507 #10 Mar 12 2021 22:24:42 %S A093507 12,30,40,56,70,84,90,126,132,144,154,176,198,182,208,234,220,260,240, %T A093507 286,330,312,306,340,374,408,390,380,442,418,456,420,476,494,532,462, %U A093507 510,546,570,544,608,552,598,644,672,690,646,714,736,650,700,684,782 %N A093507 Perimeter of primitive Pythagorean triangles sorted on hypotenuse A020882(n). %C A093507 For ordered perimeter of primitive Pythagorean triangle see A024364. %H A093507 Michael Somos, <a href="http://grail.eecs.csuohio.edu/~somos/rtritab.txt">Table of primitive Pythagorean triples and related parameters</a> %F A093507 a(n)=2*A093508. %K A093507 nonn %O A093507 1,1 %A A093507 _Lekraj Beedassy_, May 14 2004