Algebra & Equations
Sum of First n Squares
1² + 2² + … + n².
Formula
Formula
Σ = n(n+1)2n+16
Variables
| Symbol | Definition | Type & range | Units | Role |
|---|---|---|---|---|
| n | upper bound | integer (ℤ) | — | input |
Try it yourself
Interactive calculator
Worked examples
Example 1
Givenn = 10
Result385
Example 2
Givenn = 5
Result55