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A058789
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Number of polyhedra with n faces and n+1 vertices (or n vertices and n+1 faces).
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0
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0, 1, 2, 11, 74, 633, 6134, 64439, 709302, 8085725, 94713809, 1134914458, 13865916560, 172301697581, 2173270387051
(list; graph; refs; listen; history; internal format)
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OFFSET
| 4,3
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COMMENTS
| Through a(18) the only primes are 2, 11, and 64439. [Jonathan Vos Post, Apr 23, 2011]
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LINKS
| G. P. Michon, Counting Polyhedra
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EXAMPLE
| a(5)=1 because the triangular prism is the only pentahedron with 6 vertices.
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CROSSREFS
| Cf. A002856, A000109, A058786, A058787, A058788.
Sequence in context: A199417 A114179 A166992 * A158265 A198088 A112894
Adjacent sequences: A058786 A058787 A058788 * A058790 A058791 A058792
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KEYWORD
| hard,nice,nonn
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AUTHOR
| Gerard P. Michon (g.michon(AT)att.net), Nov 30 2000
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