Only converges if |r| < 1: S∞ = a₁/(1-r).

Geometric Sequence Calculator

Find terms of a geometric sequence

First Term (a₁)

Common Ratio (r)

Term Number (n)

Formula

aₙ = a₁·r^(n-1) | Sₙ = a₁(1-r^n)/(1-r)

Each term multiplied by constant ratio r.

a₈ = 4374, Sum = 6560.

Find any term and sum of a geometric sequence.

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