234589domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumber of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,0,3,1,4 for x=0,1,2,3,4.at n=8A196283Primes whose decimal digits are in ascending order and also parity alternating.at n=26A382027Prime numbersat n=20797