HOW TO RETURN f n:
    IF n=0: RETURN 1
    RETURN n - m f (n-1)

HOW TO RETURN m n:
    IF n=0: RETURN 0
    RETURN n - f m (n-1)

WRITE "F:"
FOR n IN {0..15}: WRITE f n
WRITE /

WRITE "M:"
FOR n IN {0..15}: WRITE m n
WRITE /