(Experimenting with LaTeX equation rendering)
G = [ x ↦ 3 ↑ x 3 ] 64 ( 4 ) {\displaystyle G=[x\mapsto 3\uparrow ^{x}3]^{64}(4)}
![{\displaystyle G=[x\mapsto 3\uparrow ^{x}3]^{64}(4)}](https://wikimedia.org/api/rest_v1/media/math/render/svg/d2ba5211d38db0504d39cb935752968bc5614857)