18869769920domain: NAppears in sequencesNumber of (n+1) X 2 0..3 arrays with no 2 X 2 subblock trace equal to any horizontal or vertical neighbor 2 X 2 subblock trace.at n=7A185925Number of (n+1)X9 0..3 arrays with no 2X2 subblock trace equal to any horizontal or vertical neighbor 2X2 subblock trace.at n=0A185932