User blog comment:Nayuta Ito/Mashino Scale vs Letter Notation/@comment-5029411-20170804091018/@comment-30754445-20170804104010

Actually... Z2 is a well-defined number.

While the letters beyond P aren't defined for nonintegers, the letters up to Y are defined to integers, so:

Z2 = Y10 = Λ(ψ(ψᵢ(0)),10) = Λ(ψ(ΩΩ Ω Ω Ω  Ω Ω     Ω Ω Ω        ),10)

And I too wonder what the Mashino Scale value for this would be.