422500

Appears in sequences

• Squares of even square pyramidal numbers.at n=5A014798
• Numbers that are the sum of 2 nonzero squares in exactly 7 ways.at n=5A025290
• Numbers that are the sum of 2 distinct nonzero squares in exactly 7 ways.at n=7A025308
• Number of ways to place a non-attacking white and black rook on n X n chessboard.at n=25A035287
• Squares which are the concatenation of two nonzero squares.at n=23A039686
• Squares the sum of the squares of whose digits are squares.at n=32A061090
• Square perimeters of primitive Pythagorean triangles.at n=23A120089
• Squares which are concatenation of two positive squares with possible intervening zeros.at n=26A147608
• Squares which are the sum of two or more consecutive squares.at n=22A151557
• Squares that remain squares when prefixed with a 3.at n=3A167037
• Squares that remains a square when some single digit is inserted in front of its decimal expansion.at n=31A167045
• Squares, without multiplicity, that are the concatenation of two integers (without leading zeros) the product of which is also a square.at n=25A258060
• a(n) = ( n*(n + 1)*(2*n + 1)/6 )^2.at n=12A271535
• Numbers that can be expressed as x+2y+z such that x, y, z, x+y, y+z, and x+2y+z are all positive squares.at n=31A307481