A square number is an integer that is the square (i.e., second power) of another integer.

antisquare number | biquadratic number | Brocard's problem | Brown numbers | cannonball problem | Catalan's conjecture | centered square number | Clark's triangle | cubic number | Diophantine equation | Fermat's 4n+1 theorem | greedy algorithm | gross | heptagonal square number | Lagrange's four-square theorem | Landau-Ramanujan constant | octagonal square number | partition | pentagonal square number | pseudosquare | pyramidal number | squarefree | square triangular number | sum of squares function | Waring's problem

middle school level (California grade 7 standard)