6713848491

Appears in sequences

• Number of n X n 0..4 arrays with every element equal to a diagonal or antidiagonal reflection, and new values 0 upwards introduced in row major order.at n=4A209679
• T(n,k) = Number of n X n 0..k arrays with every element equal to a diagonal or antidiagonal reflection, and new values 0 upwards introduced in row major order.at n=25A209684