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A112950
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Number of unrooted regular planar maps of valency 7 with 2n vertices (considered up to orientation-preserving homeomorphisms).
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1
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39, 80600, 513654400, 4742588317460, 53786496621600480, 696401295433093120200, 9891028759926839453714800, 150420303869075439022288355100, 2410984386008752279281147366400400
(list; graph; refs; listen; history; internal format)
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