Notes on Introductory Combinatorics

In the winter of 1978, Professor George P61ya and I jointly taught Stanford University''s introductory combinatorics course. This was a great opportunity for me, as I had known of Professor P61ya since having read his classic book, How to Solve It, as a teenager. Working with P6lya, who ·was over ninety years old at the time, was every bit as rewarding as I had hoped it would be. His creativity, i...