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%I #2 Mar 30 2012 18:59:18
%S 1,0,1,0,0,1,0,0,0,1,0,0,0,1,1,0,0,0,1,1,1,0,0,0,1,1,1,1,0,0,0,2,2,2,
%T 2,1,0,0,0,3,3,3,3,2,1,0,0,0,4,4,4,4,3,2,1,0,0,0,9,9,9,9,7,5,3,1
%N Inverse of number triangle A124749.
%C Row sums (and fourth column) are A124753.
%e Triangle begins
%e 1,
%e 0, 1,
%e 0, 0, 1,
%e 0, 0, 0, 1,
%e 0, 0, 0, 1, 1,
%e 0, 0, 0, 1, 1, 1,
%e 0, 0, 0, 1, 1, 1, 1,
%e 0, 0, 0, 2, 2, 2, 2, 1,
%e 0, 0, 0, 3, 3, 3, 3, 2, 1,
%e 0, 0, 0, 4, 4, 4, 4, 3, 2, 1,
%e 0, 0, 0, 9, 9, 9, 9, 7, 5, 3, 1
%Y Cf. A124747.
%K nonn,tabl
%O 0,32
%A _Paul Barry_, Nov 06 2006