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handle: 2117/126128
In this work we introduce the triangular double sequences of arbitrary order given by linear recurrences, that generalize some well-known recurrences that appear in enumerative combinatorics. In particular, we focussed on triangular sequences generated by two double sequences and establish their relation with the solution of linear three-term recurrences. We show through some simple examples how these triangular sequences appear as essential components in the expression of some classical orthogonal polynomials and combinatorial numbers. Peer Reviewed
Combinatorial analysis, Linear difference equations, Classificació AMS::05 Combinatorics::05A Enumerative combinatorics, Orthogonal polynomials, Classificació AMS::11 Number theory::11B Sequences and sets, Combinatorial identities, :39 Difference and functional equations::39A Difference equations [Classificació AMS], Classificació AMS::39 Difference and functional equations::39A Difference equations, :Matemàtiques i estadística::Matemàtica discreta::Combinatòria [Àrees temàtiques de la UPC], Triangular matrices, Àrees temàtiques de la UPC::Matemàtiques i estadística::Matemàtica discreta::Combinatòria, :05 Combinatorics::05A Enumerative combinatorics [Classificació AMS], Three-term recurrences, :11 Number theory::11B Sequences and sets [Classificació AMS], Anàlisi combinatòria
Combinatorial analysis, Linear difference equations, Classificació AMS::05 Combinatorics::05A Enumerative combinatorics, Orthogonal polynomials, Classificació AMS::11 Number theory::11B Sequences and sets, Combinatorial identities, :39 Difference and functional equations::39A Difference equations [Classificació AMS], Classificació AMS::39 Difference and functional equations::39A Difference equations, :Matemàtiques i estadística::Matemàtica discreta::Combinatòria [Àrees temàtiques de la UPC], Triangular matrices, Àrees temàtiques de la UPC::Matemàtiques i estadística::Matemàtica discreta::Combinatòria, :05 Combinatorics::05A Enumerative combinatorics [Classificació AMS], Three-term recurrences, :11 Number theory::11B Sequences and sets [Classificació AMS], Anàlisi combinatòria
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