User blog:Luckyluxiuz/Gchyhok Notation.

\(G(n) = \underbrace{n \uparrow^{n} ( n \uparrow^{n-1} \cdot\cdot\cdot (n \uparrow n))_\text{n}}

G^{m}(n) = \underbrace{n \uparrow^{n \uparrow m} ( n \uparrow^{n-1 \uparrow m} \cdot\cdot\cdot (n \uparrow n))_\text{n}}

G_{m}(n) = \underbrace{n \uparrow^{n \uparrow^{m^{2}}} ( n \uparrow^{n-1 \uparrow^{m^{2}}} \cdot\cdot\cdot (n \uparrow^{m^{2}} n))_\text{n}}