1168768domain: NAppears in sequencesNumber of nX3 arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..2 nX3 array.at n=10A219168Number of permutations of [n] avoiding {4231, 2134, 1243}.at n=23A294718