https://googology.fandom.com/wiki/Jonathan_Bowers
http://www.polytope.net/hedrondude/scrapers.htm
https://xkcd.com/207/
9^9^9^9^9^9^9^9^9^9^9^9^9^9^9^9^9^9^9^9^9^9^9
https://googology.fandom.com/wiki/Jonathan_Bowers
http://www.polytope.net/hedrondude/scrapers.htm