156631domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes whose trajectories under the map x -> A039951(x) enter the cycle {83, 4871} (conjectured).at n=23A252812Number of (n+1)X(2+1) 0..1 arrays with every 2X2 subblock sum nondecreasing horizontally, vertically and antidiagonally ne-to-sw.at n=10A253320Prime numbersat n=14404