193799domain: NPropertiesPrimalityPrimeyesAppears in sequencesEmirps using each of the digits 1, 3, 7, 9 at least once, but no others.at n=34A158917Number of 4 X n 0..1 arrays with rows nondecreasing and antidiagonals unimodal.at n=25A224135Prime numbersat n=17481