This app finds a formula (polynomial) that generates the given sequence of numbers. Enter the sequence as a comma separated list. The numbers cannot contain decimals but may be fractions (for example, 2/3). A new formula is created every time a comma, space, or carriage return is entered. While it is theoretically possible to enter any number of terms, the formulas get very complex rather quickly.
It has become popular in the elementary curriculum for students to find the pattern in a table of numbers. While there is nothing wrong with this, it is incorrect to lead the students to believe that their is a unique pattern generating the table. In fact any finite sequence of numbers can be generated by infinitely many formulas.