|
|
A003036
|
|
Number of simplicial arrangements of n lines in the plane (the lines do not pass through a common point, all cells are triangles).
(Formerly M0223)
|
|
5
|
|
|
1, 1, 1, 2, 2, 2, 2, 4, 2, 4, 5, 5, 6
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
3,4
|
|
REFERENCES
|
J. E. Goodman and J. O'Rourke, editors, Handbook of Discrete and Computational Geometry, CRC Press, 1997, p. 102.
B. Grünbaum, Arrangements and Spreads. American Mathematical Society, Providence, RI, 1972, p. 7.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
|
|
LINKS
|
Stefan Felsner and Jacob E. Goodman, Pseudoline Arrangements, Chapter 5 of Handbook of Discrete and Computational Geometry, CRC Press, 2017, see Table 5.6.1. [Specific reference for this sequence] - N. J. A. Sloane, Nov 14 2023
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,nice,more
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|