Exponential Generating Functions
Example .1 Find an exponential generating function for the number of permutations with repetition of length of the set , in which there are an odd number of s, an even number of s, and any number of s.
Exponential Generating Functions
Example .1 Find an exponential generating function for the number of permutations with repetition of length of the set , in which there are an odd number of s, an even number of s, and any number of s.