My favorite OEIS-related picture is Sloane's Gap.

http://arxiv.org/abs/1101.4470

Numberphile has a video about it:

https://www.youtube.com/watch?v=_YysNM2JoFo

https://oeis.org/A263267/a263267_3.pdf is especially beautiful. Quoting the original:

> Poster illustrating A259934 and A263267. Subtract the number of divisors from a number in the tree, and you get the number under it. Shows the inter-connectedness of the OEIS. (Michael De Vlieger and Antti Kartunen)

This website crashes chrome on Android.

It doesn't for me?

It does on the two devices I tested it on. No idea what the issue is though, for some reason it just says it crashed with no details.