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%I #5 Dec 19 2015 13:17:43
%S 1,-7,1,21,-7,1,-7,14,-7,1,-77,14,14,-7,1,77,-63,7,14,-7,1,105,-7,-42,
%T 7,14,-7,1,-71,98,7,-49,7,14,-7,1,-90,62,7,28,-49,7,14,-7,1,-97,-112,
%U 104,21,21,-49,7,14,-7,1,49,-118,-21,13,42,21,-49,7,14,-7,1,111,71
%N Matrix 7th power of inverse partition triangle A038498.
%e 1; -7,1; 21,-7,1; -7,14,-7,1; ...
%Y Cf. A050305-A050313.
%K sign,tabl
%O 1,2
%A _Christian G. Bower_, Aug 15 1999