User blog comment:DrCeasium/Hyperfactorial array notation: Analysis part 3/@comment-5029411-20130704231635

I think a![b+1c+1] has FGH ordinal psi(Omega_b^(Omega_b)*(Omega_b+c)) and a![21(1)2] has FGH ordinal psi(Omega_2^(Omega_2)).

The a![1,21] has FGH ordinal psi(Omega_Omega) and a![1,22] has FGH ordinal psi(alpha -> Omega_alpha).