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Math Calculators
Arithmetic Sequence Calculator
Find the nth term and the sum of the first n terms of an arithmetic sequence.
nth term
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Sum of first n terms
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About the Arithmetic Sequence Calculator
An arithmetic sequence increases (or decreases) by a constant amount, the common difference, from one term to the next.
Formula: nth term = a₁ + (n−1)d · Sum of first n terms = (n/2) × (2a₁ + (n−1)d)
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