## The Ackermann function

### Problem 282

Published on Friday, 12th March 2010, 05:00 pm; Solved by 628

For non-negative integers m, n, the Ackermann function A(m, n) is defined as follows:

For example A(1, 0) = 2, A(2, 2) = 7 and A(3, 4) = 125.

Find A(n, n) and give your answer mod 148.