#include <iostream>
#include <iomanip>

using namespace std;

unsigned long Ack(unsigned long m, unsigned long n);

const int COL_WIDTH = 9;

int main() {

    int m,n;

    cout << " Ack(m,n)";
    for(n = 0; n < 5; n++) {
        cout << setw(COL_WIDTH) << n ;
    }
    cout << endl;


    for (m = 0; m < 4; m++) {
       cout << setw(COL_WIDTH) << m;
       for(n = 0; n < 5; n++) {
           cout << setw(COL_WIDTH) << Ack(m,n);
       }
       cout << endl;
    }


    return 0;
}

unsigned long Ack(unsigned long m, unsigned long n) {
    if (m == 0) {
        return n+1;
    }  if (n == 0) {
        return Ack(m-1, 1);
    } else {
        return Ack(m-1, Ack(m, n-1));
    }
}