272 
From the top line and the diagonal of units, we continue adding a number 
to the one above for the next number in the same line (a particular case of 
art. 5). When n>m, the number of functions in each set is m. 
The solution of these equations for the second set in terms of the first 
is found by interchanging corresponding functions, pkrn —k and rnk. 
Rose Ponytrecunic Instirutre. 
