17002221domain: NAppears in sequencesNumber of (n+3)X9 0..3 arrays with every 4X4 subblock commuting with each horizontal and vertical neighbor 4X4 subblock.at n=6A186596Number of (n+3) X 10 0..3 arrays with every 4 X 4 subblock commuting with each horizontal and vertical neighbor 4 X 4 subblock.at n=5A186597