Explodotetration refers to the function \(a\ \{\{\{4\}\}\}\ b = \{a,b,4,3\} = \underbrace{a \{\{\{3\}\}\} a \{\{\{3\}\}\} \ldots \{\{\{3\}\}\} a \{\{\{3\}\}\} a}_{ ext{b a's}}\), using BEAF. In the fast-growing hierarchy, \(f_{\omega imes 2+4}(n)\) corresponds to explodotetrational growth rate.