Number Sequence Calculator
Generate and analyze number sequences: arithmetic, geometric, Fibonacci, primes, and more. Find patterns and formulas.
Find term
Term #100
199
Sequence
135791113151719
Formula for nth term
aₙ = 1 + 2(n-1)
Sum of sequence
100
Number of terms
10
Visualization
20,915,67510,455,2250
Sequence Analysis
First term
1
Last term
19
Average
10
Range
18
Arithmetic Sequences
In an arithmetic sequence, each term is obtained by adding a constant difference to the previous one. Formula: aₙ = a₁ + (n-1)d, where d is the common difference.
Geometric Sequences
In a geometric sequence, each term is obtained by multiplying the previous one by a constant ratio. Formula: aₙ = a₁ × r^(n-1), where r is the common ratio.
Special Sequences
The Fibonacci sequence (each term is the sum of the two previous) appears in nature. Prime, triangular, and square numbers have important mathematical properties.