What I have found, but not yet proven, I think is that in case of a = 3.Quote:
2(2^2)
3(3^3)
4(4^4)
.....
a(a^a)
3(3^3) = 81. But we can see it this way:
(3*3)^3-1, also 81. But this notion doesn't work with a=2, or 4 or any other number I haven't test it yet.
