7377050305domain: NAppears in sequencesNumber of (n+1)X(n+1) binary arrays with each element of every 2X2 subblock being the sum mod 2 of two others.at n=5A183837Number of (n+1)X7 binary arrays with each element of every 2X2 subblock being the sum mod 2 of two others.at n=5A183842