User blog comment:Wythagoras/FGH of Array Notations/@comment-5029411-20130707162841

Let l = Omega_Omega...Omega_Omega.

phi(Gamma_{l+1}) is equal to phi(Omega_{l+1}) then phi(Gamma_{Omega_{l+(a-1)}+1}) = phi(Omega_{l+a}). So phi(Omega_{l*a-1+Omega_Omega...Omega_Omega}) = phi(Omega_{l*a}), phi(Omega_{l^a-1*Omega_Omega...Omega_Omega}) = phi(Omega_{l^a}), etc.

We have phi(Omega_Omega...Omega_Omega_{l+1}) = lambda(1,1).