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%I #2 Mar 31 2012 12:38:16
%S 0,-1,-3,0,-16,231,53325,2843555576,8085808313800691712,
%T 65380296087528385371720710929665490863,
%U 4274583116492879495671558465604382082843695840997226026463670361542736484669
%N Numbers of the form k=k^2-n^2.
%F n=0, 1, 2,3, 4, 5, 6,... k=0,-1.-3,0,-16,231,53325,... k=k^2-n^2
%t lst={};k=0;Do[k=k^2-n^2;AppendTo[lst,k],{n,0,12}];lst
%K sign
%O 1,3
%A _Vladimir Joseph Stephan Orlovsky_, Aug 31 2008
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