Chihiro numbers

Chihiro numbers are numbers of the form n[n]n, where [n] represents the n-th hyper-operator. They are denoted as C(n) (alternately, to minimize conflict with all the other C functions in googology, they can be denoted チ(n) with a Japanese "chi" kana).

The original, now deleted, Wikipedia article described them as, and I quote, "one of the fastest-growing sequences known to mathematicians", which I suppose might be vaguely true if these mathematicians don't know any googology.

It is highly suspected that this sequence (or function) already has a name, but a brief search of Googology Wiki didn't find any.

The article in question also claims that C(C(100)) exceeds Graham's number, which is not in fact true (in fact, G(3) is already larger).