18 citations · 33 across the 22 of their papers we have counts for
1 paper · 2 filters
David Callan, Toufik Mansour, Mark Shattuck
We determine all 242 Wilf classes of triples of 4-letter patterns by showing that there are 32 non-singleton Wilf classes. There are 317 symmetry classes of triples of 4-letter pat…