🔢 Number Sequence Calculator
Generate arithmetic, geometric, Fibonacci sequences and more
What is a Number Sequence?
A number sequence is an ordered list of numbers that follow a specific rule or pattern. Each number in the sequence is called a term. Sequences are used in mathematics, computer science, and everyday problem solving to model patterns, series sums, and recursive relationships.
Types of Sequences You Can Generate
- Arithmetic Progression (AP): Each term increases or decreases by a constant difference (e.g., 1, 3, 5, 7… with d=2).
- Geometric Progression (GP): Each term is multiplied by a constant ratio (e.g., 2, 4, 8, 16… with r=2).
- Fibonacci Sequence: Each term is the sum of the two preceding ones. You can set custom starting values (F₀, F₁).
- Square Numbers: 1², 2², 3², … i.e., 1, 4, 9, 16…
- Cube Numbers: 1³, 2³, 3³, … i.e., 1, 8, 27, 64…
- Triangular Numbers: Formed by the sum of the first n natural numbers: 1, 3, 6, 10, 15…
- Prime Numbers: The first n prime numbers (2, 3, 5, 7, 11…). These are only divisible by 1 and themselves.
How to Use the Calculator
1. Select the type of sequence from the dropdown.
2. Enter the required parameters (first term, difference/ratio, or starting values). For square, cube, triangular, and prime sequences, only the number of terms is needed.
3. Set the number of terms you want to generate (up to 1000).
4. Click Calculate Sequence. The sequence appears instantly along with the sum and last term.
5. Use the Copy Sequence button to copy the entire sequence to your clipboard.
Why Use This Online Tool?
🌐 Completely free – no registration, no ads clutter.
📱 Mobile friendly – works on any device.
⚡ Instant results – all calculations are done in your browser.
🎯 Accurate – handles decimal inputs and large sequences efficiently.
📋 Easy sharing – copy the sequence with one click for use in homework, projects, or data analysis.
Whether you're a student exploring patterns, a teacher preparing examples, or just curious about mathematical sequences, this tool gives you the numbers you need in seconds.
