Tethraguppy

The tethraguppy is equal to E20#^^#20 using Extended Cascading-E Notationhttps://sites.google.com/view/rpillagergoogology/exetethrathothseries. This term was coined by wiki user .
== Approximations in other notations ==
Notation 	Approximation
Bird's array notation 	\(\{20,10[1 \backslash 2]2\}\)
Fast-growing hierarchy	\(f_{\varepsilon_0}(20)\)
== Sources ==
Category:Numbers
Category:Numbers by Redstonepillager
Category:Extended Cascading-E numbers
Category:Iterated Cantor normal form level