It also has two rank 3 actions on 14080 points, exchanged by an outer automorphism.
The perfect triple cover of Fi22 has an irreducible representation of dimension 27 over the field with 4 elements.
Conway and Norton suggested in their 1979 paper that monstrous moonshine is not limited to the monster, but that similar phenomena may be found for other groups.
Larissa Queen and others subsequently found that one can construct the expansions of many Hauptmoduln from simple combinations of dimensions of sporadic groups.
where one can set a(0) = 10 (OEIS: A007254), and η(τ) is the Dedekind eta function.