Number Sequence Calculator
Find the nth term and sum of any arithmetic or geometric sequence.
nth Term
0
Arithmetic: aₙ = a₁ + (n−1)d | Sum = n/2 × (2a₁ + (n−1)d). Geometric: aₙ = a₁ × rⁿ⁻¹ | Sum = a₁ × (rⁿ−1)/(r−1). Compound interest and population growth are geometric sequences.
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