everest% a.out
Recursion depth = 0
  Recursion depth = 1
    Recursion depth = 2
      Recursion depth = 3
        Recursion depth = 4
          Recursion depth = 5
            Recursion depth = 6
              Recursion depth = 7
                Recursion depth = 8
                  Recursion depth = 9
                    Recursion depth = 10
                      Recursion depth = 11
                        Recursion depth = 12
                          Recursion depth = 13
                            Recursion depth = 14
                              Recursion depth = 15
                                Recursion depth = 16
                                  Recursion depth = 17
                                    Recursion depth = 18
                                      Recursion depth = 19
                                        Recursion depth = 20
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					    .
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