Draw Pascal's Triangle

Generate Pascal's triangle with binomial coefficients for any row count

Maximum 60 rows.

Examples:

  • 1 row → 1
  • 3 rows → 1 / 1 1 / 1 2 1
  • 5 rows includes the binomial coefficients for n = 0…4

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What is Pascal's Triangle?

Pascal's triangle is a triangular array of binomial coefficients. The edges are 1, and every interior value is the sum of the two numbers above it. Row n (0-based) contains the coefficients of (a + b)^n.

Why Draw It?

  • Education: Introduce combinatorics and binomial expansions
  • Reference: Quickly list coefficients for a power
  • Patterns: Spot powers of two, Fibonacci relationships, and symmetries

How This Tool Works

Choose how many rows to generate. The tool builds each row from the previous using integer addition and displays a plain-text triangle you can copy. Nothing leaves your browser.

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