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Search: id:A006301
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| A006301 |
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Number of rooted genus-2 maps with n edges.
(Formerly M5120)
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+0
2
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| 0, 0, 0, 0, 21, 966, 27954, 650076, 13271982, 248371380, 4366441128, 73231116024, 1183803697278, 18579191525700, 284601154513452
(list; graph; listen)
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OFFSET
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0,5
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REFERENCES
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T. R. S. Walsh, Combinatorial Enumeration of Non-Planar Maps. Ph.D. Dissertation, Univ. of Toronto, 1971.
T. R. S. Walsh and A. B. Lehman, Counting rooted maps by genus, J. Comb. Thy B13 (1972), 122-141 and 192-218.
E. A. Bender and E. R. Canfield, The number of rooted maps on an orientable surface, J. Combin. Theory, B 53 (1991), 293-299.
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LINKS
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T. D. Noe, Table of n, a(n) for n=0..30 (from Mednykh and Nedela)
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CROSSREFS
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Sequence in context: A012793 A015305 A101732 this_sequence A004704 A138473 A072678
Adjacent sequences: A006298 A006299 A006300 this_sequence A006302 A006303 A006304
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KEYWORD
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nonn
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AUTHOR
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njas. Simon Plouffe (plouffe(AT)math.uqam.ca)
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