1514840541domain: NAppears in sequencesNumber of (n+1)X5 binary arrays with each element of every 2X2 subblock being the sum mod 2 of two others.at n=7A183840Number of (n+1) X 9 binary arrays with each element of every 2 X 2 subblock being the sum mod 2 of two others.at n=3A183844