Geodesic
Enumeration of restricted permutation triples
The electronic journal of combinatorics, Tome 17 (2010)

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Zbl
The counting problem is investigated for the permutation triples of the first $n$ natural numbers with exactly $k$ occurrences of simultaneous "rises". Their recurrence relations and bivariate generating functions are established.
DOI : 10.37236/403
Classification : 05A05, 05A15
Mots-clés : counting permutation triples, rises, recurrence relations, generating functions 
Xiaojing Chen; Wenchang Chu. Enumeration of restricted permutation triples. The electronic journal of combinatorics, Tome 17 (2010). doi: 10.37236/403
@article{10_37236_403,
     author = {Xiaojing Chen and Wenchang Chu},
     title = {Enumeration of restricted permutation triples},
     journal = {The electronic journal of combinatorics},
     year = {2010},
     volume = {17},
     doi = {10.37236/403},
     zbl = {1264.05003},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/403/}
}
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