%I #2 Mar 30 2012 18:37:04
%S 1,1,-1,5,-43,527,-8396,164672,-3835910,103464895,-3170985454,
%T 108828369497,-4134333957073,172223139437835,-7805591781504739,
%U 382374360671653989,-20132511625986242785,1133765691312312723347,-68002260363248096548050
%N Column 0 of triangle A132690.
%o (PARI) {a(n)=local(A=Mat(1), B); for(m=1, n+1, B=matrix(m, m); for(i=1, m, for(j=1, i, if(j==i, B[i, j]=1, B[i, j]=(A^(-(i-2)))[i-1, j]); )); A=B); return( ((A)[n+1,1]))}
%Y Cf. A132690; A132692, A132693, A132694.
%K sign
%O 0,4
%A _Paul D. Hanna_, Aug 25 2007