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 A364108 #11 Jul 05 2023 15:03:52 %S A364108 5,2,16,325,8,4,4,50,24336,4901,3,1600,9,777925,1250,13,25,72, %T A364108 14561856,1873180325,125,12079525,39200,9,192,7,3600,2816,26, %U A364108 169000000,85,338,17956,1444,14112,1445,44715091781,50,8780605285453456,2725,10,37,716311250,144,306317326339867638016 %N A364108 a(n) is the larger coefficient of the pair (x, y) such that (x^2-y^2)/r, 2*x*y/r, (x^2+y^2)/r are the 2 legs and hypotenuse of the least Pythagorean triple having area A006991(n). %H A364108 Michel Marcus, <a href="/A364108/b364108.txt">Table of n, a(n) for n = 1..361</a> %H A364108 Mauro Fiorentini, <a href="http://bitman.name/math/table/29">Numeri congruenti minori di 1000</a>. See column a. %H A364108 David Goldberg, <a href="https://arxiv.org/abs/2106.07373">Triangle Sides for Congruent Numbers less than 10,000</a>, arXiv:2106.07373 [math.NT], 2021. See column P, p. 7. %H A364108 Hisanori Mishima, <a href="http://www.asahi-net.or.jp/~KC2H-MSM/mathland/math10/matb2000.htm">Congruum</a>. See column m. %Y A364108 Cf. A006991 (primitive congruent numbers), A364109 (y), A364110 (r). %K A364108 nonn %O A364108 1,1 %A A364108 _Michel Marcus_, Jul 05 2023