Overview

Sequence Calculator helps you compute arithmetic and geometric progressions, including first-n sums, nth terms, formula display, and term list preview.

Key Features

• Arithmetic sequence calculation with first term, common difference, and term count.
• Geometric sequence calculation with first term, common ratio, and term count.
• Formula display for nth term and sum, useful for teaching and verification.
• Sequence preview for up to 20 terms to quickly inspect progression behavior.

How To Use

1. Enter the first term and difference/ratio in the target section.
2. Enter term count n as a positive integer.
3. Results update automatically after inputs are complete.
4. Use "Fill Example" for quick testing, or "Reset" to clear the current section.

Use Cases

• Math exercises and answer checking for sequence problems.
• Classroom demonstrations of arithmetic and geometric patterns.
• Exam preparation with fast formula verification.
• Basic series estimation in engineering and data work.

Notes

• n must be a positive integer.
• Very large values can overflow numeric limits; reduce input size if needed.
• All calculations run locally in your browser.