Liskovets, V. A. Enumeration of nonisomorphic planar maps. (English) Zbl 0578.05033 Sel. Math. Sov. 4, 303-323 (1985). The Russian original of this paper was published in two parts. Please look up the reviews of part I [Vopr. Teor. Grupp Gomologicheskoj Algebry 1981, 103-115 (1981; Zbl 0479.05036)] and of part II [Geom. Metody Zadachakh Algebry Anal. 1981, 106-117 (1981; Zbl 0495.05034)]. Cited in 2 ReviewsCited in 25 Documents MSC: 05C30 Enumeration in graph theory 05C10 Planar graphs; geometric and topological aspects of graph theory 57M15 Relations of low-dimensional topology with graph theory Keywords:rooted maps; unrooted planar maps; quotient map; Eulerian map; sense- preserving homeomorphism; strongly self-complementary maps Citations:Zbl 0467.05034; Zbl 0469.05039; Zbl 0479.05036; Zbl 0495.05034 PDFBibTeX XMLCite \textit{V. A. Liskovets}, Sel. Math. Sov. 4, 303--323 (1985; Zbl 0578.05033) Online Encyclopedia of Integer Sequences: a(n) = 2*3^n*(2*n)!/(n!*(n+2)!). Number of planar maps with n edges. Number of strongly self-dual planar maps with 2n edges.