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A081081
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Number of labeled, connected ortho-projection graphs on n vertices.
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2
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OFFSET
| 1,1
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REFERENCES
| B. Shtylla and L. Zulli, Ortho-projection graphs, in preparation.
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LINKS
| L. Zulli, Home Page
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CROSSREFS
| Cf. A081080, A081082.
Sequence in context: A175802 A161803 A057980 * A111111 A185343 A161014
Adjacent sequences: A081078 A081079 A081080 * A081082 A081083 A081084
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KEYWORD
| hard,more,nonn
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AUTHOR
| B. Shtylla and L. Zulli (shtyllab(AT)lafayette.edu, zullil(AT)lafayette.edu), Mar 05 2003
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EXTENSIONS
| a(9) from Louis Zulli (zullil(AT)lafayette.edu), Aug 23 2004
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