A081082 Number of unlabeled, connected ortho-projection graphs on n vertices.

2, 0, 2, 1, 4, 5, 14, 31

Offset: 1

Author

B. Shtylla and L. Zulli (shtyllab(AT)lafayette.edu, zullil(AT)lafayette.edu), Mar 05 2003

Keywords

• nonn

References

• B. Shtylla and L. Zulli, Ortho-projection graphs, in preparation.

Links

• L. Zulli, Home Page

Crossrefs

Cf. A081080, A081081.

Extensions

Conjecture: a(9) = 84.