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 A143732 #12 Feb 05 2013 09:07:31 %S A143732 1,1,3,1,3,5,1,1,5,7,3,1,5,7,3,9,1,5,7,1,9,11,3,7,1,11,5,13,3,7,1,9,5, %T A143732 11,13,1,15,7,9,5,3,11,1,13,15,17,5,3,1,11,7,13,9,17,19,1,11,7,13,5, %U A143732 15,9,3 %N A143732 Concerning hypotenuses of triangles such that the sum of the two legs is a perfect square. %C A143732 The sequence of a's considered in A145906. %H A143732 M. de Frenicle, <a href="http://gallica.bnf.fr/ark:/12148/bpt6k5493994j/">Methode pour trouver la solutions des problemes par les exclusions</a>, in: Divers ouvrages de mathematiques et de physique par messieurs de l'academie royale des sciences, (1693) pp 1-44, Table on page 31. %e A143732 (a,b,c,d,e,f,g,h) = (1,2,1,3,1,5,4,9) with N=7 or (1,3,2,5,7,13,6,19) with N=17 or (3,4,1,5,7,17,10,27) with N=23 or (1,4,3,7,17,25,8,33) with N=31. %K A143732 nonn,uned %O A143732 1,3 %A A143732 _Paul Curtz_, Aug 30 2008