OFFSET
5,2
REFERENCES
H. T. Croft, K. J. Falconer and R. K. Guy, Unsolved Problems in Geometry, B15.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
LINKS
Lukas Finschi, A Graph Theoretical Approach for Reconstruction and Generation of Oriented Matroids, A dissertation submitted to the Swiss Federal Institute of Technology, Zurich for the degree of Doctor of Mathematics, 2001. See Table 7.5.
Moritz Firsching, The complete enumeration of 4-polytopes and 3-spheres with nine vertices, arXiv:1803.05205 [math.MG], 2018.
Fukuda, Komei; Miyata, Hiroyuki; Moriyama, Sonoko. Complete Enumeration of Small Realizable Oriented Matroids. Discrete Comput. Geom. 49 (2013), no. 2, 359--381. MR3017917. Also arXiv:1204.0645. - From N. J. A. Sloane, Feb 16 2013
CROSSREFS
KEYWORD
nonn,hard,nice,more
AUTHOR
EXTENSIONS
a(9), from the paper by M. Firshing, added by Jud McCranie, Jan 30 2020
STATUS
approved