Number Sequence Calculator

Detect arithmetic, geometric, Fibonacci, or polynomial sequences and predict next terms.

Calculator Numbers & Math Updated Apr 20, 2026
How to Use
  1. Enter at least 3 numbers separated by commas or spaces.
  2. Classifier identifies the pattern and extrapolates the next 5 terms.
Input
Analysis

Patterns detected

Arithmetic
a_n = a₁ + (n−1)d
Geometric
a_n = a₁ · r^(n−1)
Fibonacci-like
a_n = a_(n−1) + a_(n−2)

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