2 search results - page 1 / 1 » On a conjecture of Wilf |
COMBINATORICS
1999
13 years 4 months ago
1999
Abstract. Consider, for a permutation Sk, the number F(n, ) of permutations in Sn which avoid as a subpattern. The conjecture of Stanley and Wilf is that for every there is a c...
JCT
2007
13 years 4 months ago
2007
Abstract. Let n and k be natural numbers and let S(n, k) denote the Stirling numbers of the second kind. It is a conjecture of Wilf that the alternating sum nX j=0 (−1)j S(n, j) ...