Generate a Fibonacci sequence

Generate a finite sequence beginning 0, 1, with each term equal to the previous two summed.

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ToolFibonacci Generator
Input
Output
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How it works

The sequence starts with 0 and 1, then each next term is their sum. The requested count controls output length and iteration avoids a closed-form approximation.

  • Ten terms are the initial count.
  • Output is bounded to prevent unbounded growth.

Worked example

First 10 Fibonacci Numbers
Generate the first 10 numbers in the Fibonacci sequence
Input
											10
Output
												0, 1, 1, 2, 3, 5, 8, 13, 21, 34

When to use this

Programming lessons demonstrate recurrence, number theory inspects consecutive ratios, and puzzle generators produce finite sequences.

Edge cases

  • A count of zero returns no terms.
  • The sequence begins 0, 1 rather than 1, 1.
  • Large counts eventually exceed safe integer precision in JavaScript numbers.