1.28: Sum of Squares - Mathematics LibreTexts

Sum of four Squares

Table 1 from Extended Lagrange's four-square theorem

Lagrange's Four-Square Theorem -- from Wolfram MathWorld

GitHub - crteezy/java-lagrange-four-square-algorithm: Lagrange's four-square theorem algorithm using Java recursion

PDF) Algebraic Consequences of Jacobi's Two- and Four-Square Theorems

Lagrange's 4 Square Theorem using Python

Lagrange's Four Squares Theorem

CodeChef - Lagrange's four-square theorem, also known as Bachet's conjecture, states that every natural number can be represented as the sum of four integer squares. This theorem was proven by Joseph Louis

Sum of squares, Part-2, Sum of four squares

Sum of Squares Function -- from Wolfram MathWorld