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Enumeration of rooted loopless unicursal planar maps. (English) Zbl 1340.05159
Summary: In this paper we investigate the number of rooted loopless unicursal planar maps and present some formulae for such maps with up three parameters; the number of edges and the valencies of the two odd vertices.
MSC:
05C45 Eulerian and Hamiltonian graphs
05C30 Enumeration in graph theory
05C10 Planar graphs; geometric and topological aspects of graph theory
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