19597196907domain: NAppears in sequences1/4 the number of (n+1) X 5 binary arrays with equal numbers of 2 X 2 subblocks with sums 1 and 3.at n=6A1845991/4 the number of (n+1) X 8 binary arrays with equal numbers of 2 X 2 subblocks with sums 1 and 3.at n=3A184602