3969912160

Appears in sequences

• Column 1 of triangular matrix T=A101479, in which row n equals row (n-1) of T^(n-1) followed by '1'.at n=10A101482
• Square array, read by antidiagonals, where T(n,k) = T(n,k-1) + T(n-1,k+n-1) for n>0, k>0, such that T(n,0) = T(n-1,n-1) for n>0 with T(0,k)=1 for k>=0.at n=55A136730