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%I #3 Mar 30 2012 17:37:16
%S 1,-1,1,1,-2,1,-1,2,-2,1,0,0,1,-2,1,1,-2,1,1,-2,1,0,0,0,0,1,-2,1,-1,2,
%T -2,1,0,1,-2,1,0,0,0,0,0,0,1,-2,1,0,0,1,-2,1,0,0,1,-2,1,0,0,0,0,0,0,0,
%U 0,1,-2,1,1,-2,1,1,-2,1,0,0,0,1,-2,1,0,0,0,0,0,0,0,0,0,0,1,-2,1,0,0,0
%N Matrix inverse of triangle A003983.
%e 1; -1,1; 1,-2,1; -1,2,-2,1; 0,0,1,-2,1; ...
%K sign,tabl
%O 0,5
%A _Christian G. Bower_, Jan 17 2006