556516

Appears in sequences

• Squares composed of digits {1,5,6}.at n=5A053903
• Number of 5Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 1 1 vertically.at n=9A207696
• Squares that remain squares if you decrease them by 5 times a repunit with the same number of digits.at n=5A273232
• Perfect squares whose pattern of identical digits is unique among the squares.at n=35A374267