Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Automated Counting of Towers (\`A La Bordelaise) [Or: Footnote to p. 81
  of the Flajolet-Sedgewick Chef-d'{\oe}vre]   The brilliant idea of Jean Betrema and Jean-Guy Penaud that proved the
celebrated "three to the power n" theorem of Dominique Gouyou-Beauchamps and
Xavier Viennot, counting towers of domino pieces is extended and used to
enumerate much more general towers, where the pieces can be many i-mers.

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The categories of this paper are: quant-ph
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The categories of this paper are: nlin
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The categories of this paper are: acc-phys
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The categories of this paper are: q-fin
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The categories of this paper are: hep-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: cs
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The categories of this paper are: q-alg
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The categories of this paper are: eess
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The categories of this paper are: stat
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The categories of this paper are: solv-int
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The categories of this paper are: cond-mat
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The categories of this paper are: bayes-an
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The categories of this paper are: math-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: gr-qc