After having had a bad result from other Ronald L. Graham,&nbsp;
  
Erdos on Graphs : His Legacy of Unsolved Problems







  
  
    , books and articles. I was surprised with this book. I think that Dr. Knuth seems to turn what he touches to gold? I kind of wish I had read this one several years ago when<br>I wasn't as familiar with the material.<br>I was amazed to find the recursion for the Eulerian numbers of the second type and a host of very useful identities as well.