Algebra
Sequence (Arithmetic) Calculator
Lets users solve and check sequence (arithmetic) instantly with formula, steps and examples — no manual math.
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Your result
nth term
48
aₙ = 3 + (10−1)×5 = 48; sum of 10 terms = 255
Sum of n terms
255
About this calculator
Arithmetic sequence: each term adds a constant d. nth term aₙ = a₁ + (n−1)d; sum Sₙ = n/2 × (2a₁ + (n−1)d).
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