Wilf conjecture
Combinatorics
2008-07-15 v1 Number Theory
Abstract
Let S(n,k) be the Stirling number of the second kind. Wilf conjectured that the alternating sum of S(n,k) for k from 0 to n is not zero for all n>2. In this paper, we prove that Wilf conjecture is true except at most one number with the properties of weighted Motzkin number.
Cite
@article{arxiv.0807.2150,
title = {Wilf conjecture},
author = {Junkyu An},
journal= {arXiv preprint arXiv:0807.2150},
year = {2008}
}
Comments
7 pages, draft version