2002225domain: NAppears in sequencesSmallest square containing exactly n 2's.at n=3A036509Squares composed of digits {0,2,5}, not ending with zero.at n=6A058426Smallest n-digit square starting with 2.at n=5A067472Number of 5Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 0 1 1 vertically.at n=7A207910