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Search: id:A113203
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| A113203 |
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Number of isomorphism classes of simple quadrangulations of the sphere having n vertices and n-2 faces, minimal degree 3, with orientation-reversing isomorphisms forbidden. |
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+0
2
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| 1, 0, 1, 1, 4, 3, 16, 26, 99, 256, 895, 2789, 9740, 32799, 115024, 401180, 1421170, 5046539, 18066772, 64940825, 234712099, 851801048, 3104690139, 11358900851, 41710948878, 153684688127, 568079430741, 2106188450292
(list; graph; listen)
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OFFSET
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8,5
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REFERENCES
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G. Brinkmann et al., Generation of simple quadrangulations of the sphere, Discr. Math., 305 (2005), 33-54.
Gunnar Brinkmann, Sam Greenberg, Catherine Greenhill, Brendan D. McKay, Robin Thomas and Paul Wollan, Generation of simple quadrangulations of the sphere, Discr. Math., 305 (2005), 33-54.
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LINKS
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G. Brinkmann et al., Generation of simple quadrangulations of the sphere
Gunnar Brinkmann and Brendan McKay, plantri and fullgen programs for generation of certain types of planar graph.
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CROSSREFS
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Cf. A113201, A078666, A007022, A002880, A113202, etc.
Sequence in context: A038233 A046162 A060509 this_sequence A034486 A130515 A161893
Adjacent sequences: A113200 A113201 A113202 this_sequence A113204 A113205 A113206
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Jan 07 2006
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