A Number Pyramid is composed of the 10 different numbers 0-9 with
a top row of 1 number resting on a second row of 2 sitting on a third row
of 3 supported by a bottom row of 4.  For example, a Number Pyramid
could be:
  
     0 
    1 2 
   3 4 5 
  6 7 8 9 
  
Given the clues below, can you determine the composition of Number
Pyramid 5?
 
-  The three numbers at the top of Number Pyramid 5 sum to 17,
with the largest of the three atop the pyramid.
 -  The 2 isn't in the pyramid's third row, where the three numbers
sum to 8.
 -  The leftmost number in the bottom row minus the number to its
immediate right equals 1.
 -  The four leftmost numbers in the four rows of the pyramid add up to 13.
 -  The rightmost numbers in the two bottom rows sum to 11.
  
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