847003638592domain: NAppears in sequencesNumber of (n+1)X3 0..3 arrays with every 2X2 subblock trace equal to some horizontal or vertical neighbor 2X2 subblock trace.at n=7A185800Number of (n+1)X9 0..3 arrays with every 2X2 subblock trace equal to some horizontal or vertical neighbor 2X2 subblock trace.at n=1A185806