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 A089548 #9 Jan 25 2020 12:52:14 %S A089548 40,156,340,561,1173,1624,1581,3577,3816,3901,5460,7029,7480,9636, %T A089548 8544,9717,12513,17460,17004,13000,20701,20349,18601,32361,32880, %U A089548 26329,34540,29869,37909,48357,46320,41820,50320,56784,47817,64893,69649,60580 %N A089548 Long leg of primitive Pythagorean triangles having legs that add up to a square, sorted on hypotenuse. %H A089548 Ray Chandler, <a href="/A089548/b089548.txt">Table of n, a(n) for n = 1..10000</a> %Y A089548 Cf. A088319, A088515, A088516, A088546, A089545-A089552, A089554-A089558. %K A089548 nonn %O A089548 1,1 %A A089548 _Ray Chandler_, Nov 16 2003