This arithmetic sequence reference table shows the nth term for a range of first term (a) values, assuming a common difference (d) of 3 and a term number (n) of 10. Every figure is computed with the same engine that powers our Arithmetic Sequence Calculator, so the numbers are exact.
| First term (a) | nth term | Sum of first n terms |
|---|---|---|
| 0.5 | 27.5000 | 140.0000 |
| 1 | 28.0000 | 145.0000 |
| 1.5 | 28.5000 | 150.0000 |
| 2 | 29.0000 | 155.0000 |
| 3 | 30.0000 | 165.0000 |
| 4 | 31.0000 | 175.0000 |
| 6 | 33.0000 | 195.0000 |
| 10 | 37.0000 | 235.0000 |
| 14 | 41.0000 | 275.0000 |
| 20 | 47.0000 | 335.0000 |
How to use this table
Find the row closest to your first term (a) and read across to the nth term. For a value between two rows, the real figure sits between them — or enter your exact numbers in the Arithmetic Sequence Calculator for a precise answer.
Need a value that is not in the table? — the Arithmetic Sequence Calculator does it instantly, for free, with the formula and a worked example built in.
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