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%I #4 Mar 30 2012 18:51:58
%S 1,-1,1,1,-3,1,-1,3,-2,1,1,-5,2,-5,1,-1,5,-1,5,-3,1,1,-7,1,0,3,-7,1,
%T -1,7,-4,0,2,7,-4,1,1,3,4,-21,-2,21,4,-9,1,-1,-3,13,21,-26,-21,10,9,
%U -5,1,1,-121,-13,66,26,-231,-10,33,5,-11,1,-1,121,-142,-66,229,231,-116,-33,25,11,-6
%N Numerators of the inverse triangle defined in A133135.
%C Row sums 1, 0, -1, 1, -6, 6, -8, 8, 2, -2,.. build in pairs.
%e The triangle starts
%e 1;
%e -1, 1;
%e 1,-3, 1;
%e -1, 3,-2, 1;
%e 1,-5, 2, -5, 1;
%e -1, 5,-1, 5, -3, 1;
%e 1,-7, 1, 0, 3, -7, 1;
%e -1, 7,-4, 0, 2, 7,-4, 1;
%e 1, 3, 4,-21, -2, 21, 4,-9, 1;
%e -1,-3,13, 21,-26,-21,10, 9,-5,1;
%e Pairs of numbers appear along adjacent diagonals. The first subdiagonal contains the sequence -A026741(n+2).
%Y Cf. A133135, A140218.
%K sign,frac,tabl
%O 0,5
%A _Paul Curtz_, Jun 22 2008
%E Edited by _R. J. Mathar_, Aug 06 2008