611193

Appears in sequences

• Number of matrices of any size up to column permutations, with n different elements, zero elsewhere and with no zero row or column.at n=6A104600
• Number of (n+2) X 6 0..1 arrays with every 3 X 3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally exactly three ways, and new values 0..1 introduced in row major order.at n=23A204377
• G.f. A(x) satisfies: Sum_{n>=0} ( 1/A(x) - 1/(1+x)^n )^n = 1.at n=8A317339