The Connoisseur of Number Sequences (2015)

An amazing resource that I referenced frequently as an undergrad math major.

There were many times where I'd be working on a proof and I'd find a pattern that could be expressed as an integer sequence, but I'd have no idea what the significance of the numbers was or if the pattern held infinitely.

Thanks to OEIS, it was trivial to plug the numbers I had into the site and discover the underlying logic with references for learning more.

What comes next? 10, 15, 38, 1844...

(Besides the obvious answer of the existence of infinite ways to generate any sequence)

"Magnetization ...1853, 4124, 4818" from the index to The Encyclopedia of Integer Sequences (1995)

Too meta?