4109933domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumber of (n+1)X(5+1) 0..1 arrays with every 2X2 subblock having a single 1 or two 1s on the same edge or main diagonally.at n=5A251289Number of (n+1)X(6+1) 0..1 arrays with every 2X2 subblock having a single 1 or two 1s on the same edge or main diagonally.at n=4A251290Prime numbersat n=290433