Arithmetic Sequence Calculator
First Term (a₁)
Common Difference (d)
Number of Terms (n)
An arithmetic sequence is a list of numbers where consecutive terms differ by a constant value called the common difference (d). Examples include: 2, 5, 8, 11... (d=3) or 10, 7, 4, 1... (d=−3).
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Did You Know?
At age 10, Carl Friedrich Gauss instantly calculated the sum of 1 to 100 as 5,050 by pairing numbers (1+100, 2+99, ...) — this is exactly the arithmetic series formula.
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