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A006388
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Number of planar maps with n edges and without faces of degree 1.
(Formerly M1633)
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0
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1, 2, 6, 18, 74, 393, 2282, 14700, 99614, 703519, 5123598, 38279496
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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