What you provide
What you provide
- First term, using the same scenario as the other inputs
- Common difference, using the same scenario as the other inputs
- Term number, using the same scenario as the other inputs
MATH / SEQUENCES
Arithmetic Sequence Calculator
Find the nth term of an arithmetic sequence from its first term and constant difference. Review the equation, substituted values, result context, and modelling limits in one guided workspace.
- 01 Calculated in this tab
- 02 Values stay in this browser tab
- 03 Use boundary
Use boundary
Calculation path
Find the nth term of an arithmetic sequence from its first term and constant difference. The page evaluates the displayed equation from your supplied values and presents both symbolic and substituted KaTeX working so the arithmetic can be checked.
Calculation path
a_n = a_1 + (n - 1)d
What you receive
What you receive
- Nth term from the stated equation
- A symbolic formula plus substituted working with your values
- Visible assumptions, field guidance, and an authoritative learning reference
Use boundary
Choose the maximum decimal places shown. This does not increase source accuracy.
The model assumes a constant additive difference between consecutive terms.
Use internally consistent units and retain extra precision when carrying the result into another calculation.
Reviewed reference factors