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Inverse of number triangle A123878.
2

%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