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%I #2 Mar 30 2012 18:53:09
%S 1,-1,1,0,-1,1,0,-1,-1,1,0,0,-1,-1,1,0,0,-1,-1,-1,1,0,0,0,-1,-1,-1,1,
%T 0,0,0,-1,-1,-1,-1,1,0,0,0,0,-1,-1,-1,-1,1,0,0,0,0,-1,-1,-1,-1,-1,1,0,
%U 0,0,0,0,-1,-1,-1,-1,-1,1,0,0,0,0,0,-1,-1,-1,-1,-1,-1,1,0,0,0,0,0,0,-1,-1
%N Triangle read by rows. Signed version of A145362. Main diagonal positive, rest of the nonzero terms negative.
%C Matrix inverse of this triangle is A155092.
%e Table begins:
%e 1,
%e -1,1,
%e 0,-1,1,
%e 0,-1,-1,1,
%e 0,0,-1,-1,1,
%e 0,0,-1,-1,-1,1,
%e 0,0,0,-1,-1,-1,1,
%e 0,0,0,-1,-1,-1,-1,1,
%e 0,0,0,0,-1,-1,-1,-1,1,
%e 0,0,0,0,-1,-1,-1,-1,-1,1,
%Y Cf. A145362.
%K sign,tabl
%O 1,1
%A _Mats Granvik_, Jan 20 2009