Arbres d'André, nombres de Carlitz et d'Entringer
Séminaire lotharingien de combinatoire, Tome 12 (1985)
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We propose a completion of the treatment of the theory of André trees due to D. Foata and M.-P. Schützenberger in ["Nombres d'Euler et permutations alternantes", University of California, Gainesville, 1971]. In particular, we show how to recover one of the results established there with the help of an ingenious but relatively complicated procedure of Christiane Poupard in [Disc. Math. 38 (1982), 265-271].