Web Tools
Number Sequence Generator
Generate arithmetic, geometric, Fibonacci, prime, triangular, square, cube, power, factorial, and custom number sequences. Configurable count, start, step, ratio, base, and custom formula with variable n. Runs entirely in your browser — your data never leaves your machine.
sequence numbers math fibonacci prime generator
Published May 31, 2026
All interactive tools run entirely in your browser. Your data never leaves your device.
How It Works
Select a sequence type, configure parameters, and generate up to 1000 values. Each sequence type uses its mathematical formula to compute values. Custom sequences let you define your own formula using the variable n.
Features
- 10 sequence types: arithmetic, geometric, Fibonacci, prime, triangular, square, cube, power, factorial, custom
- Arithmetic: configurable start value and step
- Geometric: configurable start value and ratio
- Prime: generates prime numbers starting from 2
- Custom formula: use
nas variable with+,-,*,/,^, parentheses - Up to 1000 values: capped for performance
- Custom separator: comma, newline, space, or any string
- Sum calculation: automatic sum of all generated values
- Formula display: shows the mathematical formula used
- 5 examples: even numbers, powers of 2, primes, Fibonacci, triangular numbers
- Private: all computation runs in your browser — no data transmitted
Use Cases
- Generating test data for algorithms
- Learning about mathematical sequences
- Creating number patterns for educational materials
- Filling arrays or lists with specific sequences
- Quick reference for prime numbers or Fibonacci values