Arithmetic Sequence Calculator
Find a term and finite sum from the first term, common difference and count.
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USDTHE NUMBERS, MADE CLEARInstant calculation
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Find a term and finite sum from the first term, common difference and count.
Worked example
Inputs
- First term: 3
- Common difference: 4
- Number of terms n: 5
Results
- Nth term: 19
- Sum of first n terms: 55
Find a term and finite sum from the first term, common difference and count.
Reviewed:Common uses
Find a term and finite sum from the first term, common difference and count.
BEHIND THE NUMBERSFormula & assumptions
aₙ=a₁+(n−1)d; Sₙ=n(a₁+aₙ)/2
Find a term and finite sum from the first term, common difference and count.