395408137domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumber of nX8 binary arrays without the pattern 0 0 1 1 diagonally, vertically, antidiagonally or horizontally.at n=3A189904Number of 4Xn binary arrays without the pattern 0 0 1 1 diagonally, vertically, antidiagonally or horizontally.at n=7A189906Prime numbersat n=21104476