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Showing 1-6 of 6 for the term ""Callan, David""

Enumeration of small Wilf classes avoiding 1324 and two other 4-letter patterns
Article

Enumeration of small Wilf classes avoiding 1324 and two other 4-letter patterns

Callan, David, Mansour, Toufik
Enumeration of permutations avoiding a triple of 4-letter patterns is almost all done
Article

Enumeration of permutations avoiding a triple of 4-letter patterns is almost all done

Callan, David, Mansour, Toufik, Shattuck, Mark
On permutations avoiding 1324, 2143, and another 4-letter pattern
Article

On permutations avoiding 1324, 2143, and another 4-letter pattern

Callan, David, Mansour, Toufik
Enumeration of small Wilf classes avoiding 1342 and two other 4-letter patterns
Article

Enumeration of small Wilf classes avoiding 1342 and two other 4-letter patterns

Callan, David, Mansour, Toufik
Some identities for derangement and Ward number sequences and related bijections
Article

Some identities for derangement and Ward number sequences and related bijections

Callan, David, Mansour, Toufik, Shattuck, Mark
On permutations avoiding 1243, 2134, and another 4-letter pattern
Article

On permutations avoiding 1243, 2134, and another 4-letter pattern

Callan, David, Mansour, Toufik