112210745828domain: NAppears in sequencesHalf the number of (n+1)X6 binary arrays with equal numbers of majority one 2X2 subblocks and majority zero 2X2 subblocks.at n=5A184463Half the number of (n+1)X7 binary arrays with equal numbers of majority one 2X2 subblocks and majority zero 2X2 subblocks.at n=4A184464