On determining paint by numbers puzzles with nonunique solutions.
Mullen, Ryan (2009)
Journal of Integer Sequences [electronic only]
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Mullen, Ryan (2009)
Journal of Integer Sequences [electronic only]
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Paquin, Geneviève, Vuillon, Laurent (2007)
The Electronic Journal of Combinatorics [electronic only]
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Seibert, Jaroslav, Trojovský, Pavel (2007)
Journal of Integer Sequences [electronic only]
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Kimberling, Clark (2007)
Journal of Integer Sequences [electronic only]
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Mercer, A.McD. (1978)
International Journal of Mathematics and Mathematical Sciences
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Jacques Justin (2010)
RAIRO - Theoretical Informatics and Applications
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Fine and Wilf's theorem has recently been extended to words having three periods. Following the method of the authors we extend it to an arbitrary number of periods and deduce from that a characterization of generalized Arnoux-Rauzy sequences or episturmian infinite words.
Vinh, Le Anh (2007)
Journal of Integer Sequences [electronic only]
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Filippo Mignosi, Luca Q. Zamboni (2002)
Acta Arithmetica
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Kimberling, Clark (2007)
Journal of Integer Sequences [electronic only]
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Mauro Torelli (2006)
RAIRO - Theoretical Informatics and Applications
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Increasing integer sequences include many instances of interesting sequences and combinatorial structures, ranging from tournaments to addition chains, from permutations to sequences having the that any integer greater than 1 can be obtained as the sum of two elements in the sequence. The paper introduces and compares several of these classes of sequences, discussing recurrence relations, enumerative problems and questions concerning shortest sequences.
Jacques Justin, Giuseppe Pirillo (2002)
RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications
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Here we give a characterization of Arnoux–Rauzy sequences by the way of the lexicographic orderings of their alphabet.