Number Sequence Generator
Generate arithmetic, geometric, Fibonacci, prime, square, cube, and other number sequences. Export as list or JSON array.
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What Is Number Sequence Generator?
Number Sequence Generator creates mathematical number sequences on demand. Choose from arithmetic, geometric, Fibonacci, prime, square, cube, triangular, and powers of 2 sequences. Configure the length and parameters, then export as a comma-separated list, newline-separated list, or JSON array.
How to Use
- Select a sequence type from the dropdown
- Set the number of terms to generate
- For arithmetic sequences, configure the start value and step
- For geometric sequences, configure the start value and ratio
- Choose an output format and copy the result
Sequence Types
- Arithmetic: each term increases by a fixed step (e.g. 1, 3, 5, 7…)
- Geometric: each term is multiplied by a fixed ratio (e.g. 1, 2, 4, 8…)
- Fibonacci: each term is the sum of the two preceding terms
- Prime: prime numbers in order (2, 3, 5, 7, 11…)
- Square: perfect squares (1, 4, 9, 16, 25…)
- Cube: perfect cubes (1, 8, 27, 64…)
- Triangular: triangular numbers (1, 3, 6, 10, 15…)
- Powers of 2: 1, 2, 4, 8, 16, 32…
FAQ
What is the maximum sequence length?
Up to 1000 terms. For prime sequences, generating large counts may take a moment as each candidate must be tested for primality.
Can I use this for test data?
Yes. The JSON array output is ready to paste directly into code. The comma-separated format works for spreadsheets and CSV files.