27913330472domain: NAppears in sequencesNumber of (n+1)X(n+1) 0..1 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements.at n=5A203372Number of (n+1)X7 0..1 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements.at n=5A203376