1825800domain: NAppears in sequencesNumber of nX7 0..2 arrays with diagonals and rows unimodal and antidiagonals nondecreasing.at n=3A224309Number of 4Xn 0..2 arrays with diagonals and rows unimodal and antidiagonals nondecreasing.at n=6A224312Numbers whose square starts and ends with exactly 4 identical digits.at n=17A346942