About this tool
Generate arithmetic, geometric, Fibonacci, prime, square, cube, triangular, even and odd sequences.
Arithmetic: aₙ = a₁ + (n − 1)d. Geometric: aₙ = a₁·rⁿ⁻¹. Fibonacci adds the two previous terms. Primes are tested by trial division.
Formula: aₙ = a₁ + (n−1)d · aₙ = a₁·rⁿ⁻¹
Example: Sequence = Arithmetic, Number of terms = 6 → Sequence = 3, 7, 11, 15, 19, 23, Sum of terms = 78.
Up to 1,000 terms. Start and step apply only to arithmetic and geometric sequences.
Quick steps
- Enter your values — every field shows its unit.
- Press Calculate (or Try an example to see how it works).
- Read the results and copy them if you need them elsewhere.
The calculation runs in your browser. Nothing you type is sent to 1CLIK.
FAQ
How does the Number Sequence Generator (Primes, Fibonacci…) work?
Arithmetic: aₙ = a₁ + (n − 1)d. Geometric: aₙ = a₁·rⁿ⁻¹. Fibonacci adds the two previous terms. Primes are tested by trial division.
What should I keep in mind?
Up to 1,000 terms. Start and step apply only to arithmetic and geometric sequences.
Is my data sent anywhere?
No. The numbers stay on your device; the page only shows the result.