Number Pattern Completer
Paste a sequence, see which pattern fits, and get the next terms.
Number Pattern Completer
Detect mathematical patterns in number sequences and predict the next terms
What it looks for
- Arithmetic: constant difference (2, 5, 8, 11…)
- Geometric: constant ratio (3, 6, 12, 24…)
- Fibonacci-like: each term ≈ sum of previous two
- Polynomial: second/third differences settle (squares, cubes)
Short lists often fit more than one rule. Prefer the simplest explanation that matches all terms you gave.
How to check a guess
- First differences for arithmetic; ratios for geometric
- Second differences for quadratic-looking sequences
- Add more terms if two patterns still tie
Frequently Asked Questions
How many terms do I need?
Three or four often pin down arithmetic/geometric. Messier patterns need more. Extra terms cut false positives.
What if multiple patterns fit?
Common with short lists. Rank by simplicity and how well later terms match. Use “show all” when the tool offers it.
Can it handle decimals?
Yes — integers, decimals, and negatives.
What if nothing fits?
Could be random, primes, or a rule too odd for the detector. Recheck input or add terms.
How accurate are predictions?
Exact for clean arithmetic/geometric/polynomial fits. Confidence drops when the pattern is fuzzy.
OK for homework?
Fine for practice and checking. Follow your school's rules on tools during graded work.
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