Number sequence generator

  1. Input
  2. Options
  3. Result

Number sequence generator

Generate arithmetic, geometric, Fibonacci or formula-based sequences with sum and CSV export.

Generate up to 5,000 terms. Formula mode uses n and common math functions, such as sin(n), sqrt(n), and n^2. Other modes use the first term and a step, ratio or second seed.

Generate number sequences online

Create common numeric sequences, preview values in a table and export the result for spreadsheets or lessons.

Formula mode accepts n with common math functions, which is useful for quick custom progressions.

Quick start

Generate and export up to 5,000 sequence terms.

  1. Choose a sequence type
  2. Set initial terms or a formula and term count
  3. Generate and export every term
✓ The tool runs directly in the browser and is ready for quick checks without installing software.
✓ Input can be cleared and recalculated immediately, which is useful for repeated small tasks.
✓ Use fullscreen mode when you need more space for long text, structured data or large result blocks.
✓ Copy buttons are available on generated output so results can be reused in code, documents or support chats.
✓ Most operations are deterministic: the same input and options produce the same output.
✓ For sensitive content, prefer local browser tools and review the result before sharing it further.

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