User blog comment:Alejandro Magno/Extended Arrow Notation/@comment-5029411-20140919211622

Extension!

n^(x)(y)^m = n^(x)^(x)^...^(x)^(x)^m/w 2^y-1 (x)'s

n^(x)(y)(z)^m = n^(x)(y)^(x)(y)^...^(x)(y)^(x)(y)^m/w 2^z-1 (x)(y)'s