Enter at least 3 terms of a sequence to detect whether it is arithmetic or geometric, and find any term you need.
This tool analyzes a series of numbers to detect whether it follows an arithmetic (constant difference) or geometric (constant ratio) pattern.
Arithmetic sequences use the formula a_n equals a_1 plus (n-1) times d. Geometric sequences use a_n equals a_1 times r raised to the power of (n-1).
Enter at least 3 terms of your sequence separated by commas, plus the term number you want to find, then click Calculate.
Example: The sequence 2, 5, 8, 11, 14 is arithmetic with a common difference of 3, so the 10th term equals 29.
What if the sequence is neither arithmetic nor geometric. The tool will indicate that no simple pattern was detected from the entered terms.
How many terms should I enter. At least 3 terms are recommended for reliable pattern detection.