Find the terms, the nth term and the sum of an arithmetic sequence.
Runs entirely in your browser.
Arithmetic Sequence Terms, Nth Term and Sum
- First term (a)
- Common difference (d)
- Number of terms (n)
- Terms
About Arithmetic Sequence Calculator
An arithmetic sequence adds the same amount each step. Given the first term a and the common difference d, the nth term is a + (n-1)d and the sum of the first n terms is n(2a + (n-1)d) / 2.
Both formulas are shown filled in with your numbers, not just the answers, because the working is usually the point when this comes up as homework.
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