508907970

Appears in sequences

• Column 2 of triangular matrix T=A101479, in which row n equals row (n-1) of T^(n-1) followed by '1'.at n=9A101483
• Triangular matrix T, read by rows, where row n of T equals row (n-1) of T^(n+1) with an appended '1'.at n=45A121412
• Square array, read by antidiagonals, where T(n,k) = T(n,k-1) + T(n-1,k+n) for n>0, k>0, such that T(n,0) = T(n-1,n) for n>0 with T(0,k)=1 for k>=0.at n=45A136733