835833221744domain: NAppears in sequencesNumber of (n+1)X(n+1) binary arrays with every 2X2 subblock sum equal to some horizontal or vertical neighbor 2X2 subblock sum.at n=5A185488Number of (n+1)X7 binary arrays with every 2X2 subblock sum equal to some horizontal or vertical neighbor 2X2 subblock sum.at n=5A185494