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Search: id:A003036
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| A003036 |
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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)
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+0
4
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| 1, 1, 1, 2, 2, 2, 2, 4, 2, 4, 5, 5, 6
(list; graph; listen)
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OFFSET
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3,4
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REFERENCES
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J. E. Goodman and J. O'Rourke, editors, Handbook of Discrete and Computational Geometry, CRC Press, 1997, p. 102.
B. Gr\"{u}nbaum, Arrangements and Spreads. American Mathematical Society, Providence, RI, 1972, p. 7.
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CROSSREFS
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Cf. A048872, A048873.
Adjacent sequences: A003033 A003034 A003035 this_sequence A003037 A003038 A003039
Sequence in context: A046927 A084718 A037445 this_sequence A089818 A067025 A049047
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KEYWORD
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nonn,nice
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AUTHOR
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njas
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