The Ackermann Function
$\def\htmltext#1{\style{font-family:inherit;}{\text{#1}}}$ For non-negative integers $m$, $n$, the Ackermann function $A(m,n)$ is defined as follows: $$ A(m,n) = \cases{ n+1 &$\htmltext{ if }m=0$\cr A(m-1,1) &$\htmltext{ if }m>0 \htmltext{...