The [Online Encyclopedia of Integer Sequences](https://oeis.org/) (OEIS) inspired a large number of theoretical discoveries in mathematics, following the pattern: from numerical data to conjectures to proofs. 

According to the webpage listing [Works citing OEIS](http://oeis.org/wiki/Works_Citing_OEIS),

> over 6000 people have found it helpful, and that many of these works say things like "This discovery was made with the help of the OEIS".