proc leonardo L0 L1 add . .
   print "L0:" & L0 & " L1:" & L1 & " add:" & add
   write L0 & " "
   write L1 & " "
   for i = 2 to 24
      tmp = L0
      L0 = L1
      L1 = tmp + L1 + add
      write L1 & " "
   .
   print ""
.
leonardo 1 1 1
leonardo 0 1 0
