%I #3 Mar 30 2012 17:37:10
%S 1,-1,0,1,-1,-1,4,-1,-19,31,120,-483,-933,8623,6748,-189589,41561,
%T 5147391,-6328400,-170622599,394612599,6807529823,-23890335372,
%U -322371010985,1564733285829,17884889743135,-114158790326872
%N Column 0 of triangle A055138.
%K sign
%O 0,7
%A _Christian G. Bower_, May 09 2000