154792049domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumber of nX5 binary arrays indicating whether each 2X2 subblock of a larger binary array has lexicographically increasing rows and columns, for some larger (n+1)X6 binary array with rows and columns of the latter in lexicographically nondecreasing order.at n=9A227088Prime numbersat n=8698554