%I A117941
%S A117941 1,2,1,5,2,1,2,0,0,1,4,2,0,2,1,10,4,2,5,2,1,5,0,0,2,0,0,1,10,5,0,4,2,0,
               2,1,
%T A117941 25,10,5,10,4,2,5,2,1,2,0,0,0,0,0,0,0,0,1,0,4,2,0,0,0,0,0,0,0,2,1,10,4,
               2,0,0,
%U A117941 0,0,0,0,5,2,1,4,0,0,2,0,0,0,0,0,2,0,0,1,8,4,0,4,2,0,0,0,0,4,2,0,2,1
%V A117941 1,-2,1,-5,2,1,-2,0,0,1,4,-2,0,-2,1,10,-4,-2,-5,2,1,-5,0,0,2,0,0,1,10,
               -5,0,-4,2,0,-2,1,
%W A117941 25,-10,-5,-10,4,2,-5,2,1,-2,0,0,0,0,0,0,0,0,1,0,4,-2,0,0,0,0,0,0,0,-2,
               1,10,-4,-2,0,0,
%X A117941 0,0,0,0,-5,2,1,4,0,0,-2,0,0,0,0,0,-2,0,0,1,-8,4,0,4,-2,0,0,0,0,4,-2,0,
               -2,1
%N A117941 Inverse of number triangle A117939.
%C A117941 Row sums are A117942. A117941 mod 2=A117944.
%e A117941 Triangle begins
%e A117941 1,
%e A117941 -2, 1,
%e A117941 -5, 2, 1,
%e A117941 -2, 0, 0, 1,
%e A117941 4, -2, 0, -2, 1,
%e A117941 10, -4, -2, -5, 2, 1,
%e A117941 -5, 0, 0, 2, 0, 0, 1,
%e A117941 10, -5, 0, -4, 2, 0, -2, 1,
%e A117941 25, -10, -5, -10, 4, 2, -5, 2, 1
%Y A117941 Sequence in context: A140879 A006556 A108790 this_sequence A134566 A128694 
               A088421
%Y A117941 Adjacent sequences: A117938 A117939 A117940 this_sequence A117942 A117943 
               A117944
%K A117941 sign,tabl
%O A117941 0,2
%A A117941 Paul Barry (pbarry(AT)wit.ie), Apr 05 2006