Moon, J. W. Four combinatorial problems. (English) Zbl 0215.33201 Combinat. Math. Appl., Proc. Conf. Math. Inst., Oxford 1969, 185-190 (1971). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 3 Documents MSC: 05A20 Combinatorial inequalities 05A99 Enumerative combinatorics PDF BibTeX XML