451939391domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumber of nX4 arrays of the minimum value of corresponding elements and their horizontal, vertical, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 nX4 array.at n=17A219911Prime numbersat n=23950324