// This program prints a(n) = a(n-1) + 3 for n = 1..10, a(0) = 0
// The output is a(n) for n = 1..10.


#include <stdio.h>

int rec (int);


int main ()

{
   int n = 1;
   int sum;


   for (n = 1; n <= 10; n++) {

      sum = rec (n);
      printf ("%4d   0x%08x\n", sum, sum);
   }

}


int rec (int i)

{
   int ret = 0;
   int sum;

   if (i == 0)
      ret = 0;

   else {
      ret += rec (i - 1);

      ret += 3;
   }

   return ret;
}