Catalan's triangle T(n,k) (read by rows): each term is the sum of the entries above and to the left, i.e. T(n,k)=sum(T(n-1,j),j=0..k).
1, 1, 1, 1, 2, 2, 1, 3, 5, 5, 1, 4, 9, 14, 14, 1, 5, 14, 28, 42, 42, 1, 6, 20, 48, 90, 132, 132
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Fri Jul 22 22:43:20 CEST 2011 [seqfan] inverse binomial transform on diagonals of triangular table