%I #2 Mar 30 2012 18:59:18
%S 1,0,1,1,0,1,1,3,0,1,5,3,5,0,1,11,18,5,7,0,1,41,39,35,7,9,0,1,120,157,
%T 75,56,9,11,0,1,421,459,325,119,81,11,13,0,1,1381,1668,950,553,171,
%U 110,13,15,0,1,4840
%N Inverse of number triangle A123878.
%C First column is A055113. Row sums are A000108.
%e Number triangle begins
%e 1,
%e 0, 1,
%e 1, 0, 1,
%e 1, 3, 0, 1,
%e 5, 3, 5, 0, 1,
%e 11, 18, 5, 7, 0, 1,
%e 41, 39, 35, 7, 9, 0, 1,
%e 120, 157, 75, 56, 9, 11, 0, 1
%K nonn,tabl
%O 0,8
%A _Paul Barry_, Oct 16 2006