Mathlean · Online math workspace
Sequence pattern interpreter
Turn a supported ellipsis pattern into an explicit sum or product.
How to use this calculator
Edit Interpret(1+2+...+10). The starter becomes a finite sum, which can then be calculated.
Tap the math below to edit it and see the result. Once a result is ready, press Tab on a hardware keyboard to accept it. Outside a matrix, Return completes the line; the phone math keyboard has the same Return action.
Try it here
Interactive tools require JavaScript. You can read the guide and example without it.
What to know
A few terms never uniquely determine a sequence. CE uses a restricted inference rule and may leave ambiguous patterns unchanged.
Mathlean combines visual mathematical input with computation and canvas tools. Results depend on the expression and available engine support; check important answers independently.