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%I #9 Aug 30 2014 18:57:19
%S 4,8,16,20,25,32,34,40,52,64,68,80,100,104,116,128,136,146,148,160,
%T 164,169,178,194,200,205,208,212,221,232,244,256,260,272,289,292,296,
%U 305,320,328,340,356,377,386,388,400,404,410,416,424,436,452
%N Numbers n with no 4k+3 factors such that Pell equation x^2 - n y^2 = -1 insoluble.
%D "Advanced Number Theory" by Harvey Cohn.
%H Joerg Arndt, <a href="http://www.jjj.de/fxt/#fxtbook">Matters Computational (The Fxtbook)</a>
%Y Cf. A031396, A031397, A031398.
%K nonn
%O 1,1
%A _David W. Wilson_
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