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Search: id:A099553
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| A099553 |
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Number of rooted 2-connected 4-regular planar maps without loops. |
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+0
1
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OFFSET
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3,2
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REFERENCES
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Han Ren, Yanpei Liu and Zhaoxiang Li, Enumeration of 2 -connected Loopless 4 -regular Maps on the Plane, European J. Combin., 23 (2002), 93-111.
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FORMULA
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The reference gives a (complicated) g.f.
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CROSSREFS
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Adjacent sequences: A099550 A099551 A099552 this_sequence A099554 A099555 A099556
Sequence in context: A084180 A020988 A084480 this_sequence A119694 A121949 A005144
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KEYWORD
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nonn
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AUTHOR
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njas, Nov 18 2004
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