Introduction - If you have any usage issues, please Google them yourself
The program is piecewise function:
Akm (m, n) {
N+ 1 m = 0
Akm (m-1, 1) m! = 0, n = 0
Akm (m-1) (akm (m, n-1)) m! = 0, n.= 0
Realize the recursive and the recursion algorithm
The recursion algorithm may make computing time reduced