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 A023185 #20 May 06 2025 00:52:00 %S A023185 73225,196729,543049,706225,730249,3560089,3584425,6434041,8392849, %T A023185 14561209,15686089,40742425,43508881,69339625,73878025,85753369, %U A023185 88450609,90723169,146947321,148031689,180998425,216698161,235198825,273080809 %N A023185 Square of main diagonal of 3-dimensional box with coprime integer sides and integer face diagonals. %C A023185 Ordered by length of main diagonal. - _Sean A. Irvine_, May 26 2019 %H A023185 Sean A. Irvine, <a href="/A023185/b023185.txt">Table of n, a(n) for n = 1..50</a> %H A023185 Sean A. Irvine, <a href="https://github.com/archmageirvine/joeis/blob/master/src/irvine/oeis/a023/A023185.java">Java program</a> (github) %H A023185 Jean Lagrange, <a href="https://doi.org/10.1090/S0025-5718-1983-0717711-9">Sets of n Squares of Which Any n-1 Have Their Sum Square</a>, Mathematics of Computation, Vol 41, Nr 164, Oct 1983. %H A023185 Wikipedia, <a href="https://en.wikipedia.org/wiki/Euler_brick">Euler brick</a> %Y A023185 Cf. A031173, A031174, A031175. %K A023185 nonn %O A023185 1,1 %A A023185 _David W. Wilson_