Séminaire Lotharingien de Combinatoire, B16j (1988), 4 pp.
[Formerly: Publ. I.R.M.A. Strasbourg, 1987/S-16, p.
129-132.]
Volker Strehl
Anmerkungen zu einer Anzahlformel von G. Kreweras für numerierte Wurzelbäume
Abstract.
We give a combinatorial proof of a surprising recent formula of
Kreweras for the number of rooted labelled trees with some prescribed
increasing edges.
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