121105865domain: NAppears in sequencesa(n) = (1/n!)*Sum_{k=0..n} Stirling1(n,k)*A062208(k).at n=5A136245Array read by antidiagonals: A(n,k) is the number of binary matrices with k distinct columns and any number of nonzero rows with n ones in every column and columns in decreasing lexicographic order.at n=39A331277