Concepedia
Journal of Combinatorial Theory Series A · 1974 · 92 citations · 4 references
4
Some unsolved problems.
Paul Erdős · The Michigan Mathematical Journal · 1957 · 336 citations · Full text
Natural Sciences, Mathematics, Geometry +6
Non-repetitive sequences
P. A. B. Pleasants · Mathematical Proceedings of the Cambridge Philosophical Society · 1970 · 143 citations
Natural Sciences, Mathematics, Sequence Analysis +3
Is There a Sequence on Four Symbols in Which No Two Adjacent Segments are Permutations of One Another?
Tom C. Brown · American Mathematical Monthly · 1971 · 30 citations
Natural Sciences, Mathematics, Combinatorics +4
T. C. Brown · American Mathematical Monthly · 1971 · 15 citations