This interactive figure allows you to explore the sequence 1, z, z^z, z^(z^z), z^(z^(z^z)),...[br]There are 100 terms displayed.

[size=85]"Spiral Formations from Iterated Exponentiation" from the Wolfram Demonstrations Project[br] http://demonstrations.wolfram.com/SpiralFormationsFromIteratedExponentiation/[/size]