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A374832
Number of incongruent n-sided Reinhardt polygons.
2
0, 0, 1, 0, 1, 1, 1, 0, 2, 1, 1, 2, 1, 1, 5, 0, 1, 5, 1, 2, 10, 1, 1, 12, 4, 1, 23, 2, 1, 41, 1, 0, 64, 1, 12, 102, 1, 1, 191, 12, 1, 338, 1, 2, 777, 1, 1, 1088, 9, 34, 2057, 2, 1, 3771, 66, 12, 7156, 1, 1, 17856, 1, 1, 26811, 0, 193, 48272, 1, 2, 92206, 385, 1, 175792
OFFSET
1,9
REFERENCES
Karl Reinhardt, Extremale Polygone gegebenen Durchmessers. Jahresber. Deutsche Math.-Verein. 31 (1922): 251-70.
LINKS
Kevin G. Hare and Michael J. Mossinghoff, Sporadic Reinhardt Polygons, Discrete & Computational Geometry. An International Journal of Mathematics and Computer Science 49, no. 3 (2013): 540-57.
Kevin G. Hare and Michael J. Mossinghoff, Most Reinhardt Polygons Are Sporadic, Geom. Dedicata 198 (2019): 1-18.
Michael J. Mossinghoff, Enumerating Isodiametric and Isoperimetric Polygons, J. Combin. Theory Ser. A 118, no. 6 (2011): 1801-15.
Wikipedia, Reinhardt polygon.
FORMULA
a(n) = A373694(n) + A373695(n). - Bernd Mulansky, Aug 23 2024
CROSSREFS
Sequence in context: A291771 A186972 A373694 * A053734 A238904 A214501
KEYWORD
nonn
AUTHOR
Bernd Mulansky, Jul 21 2024
EXTENSIONS
More terms from Bernd Mulansky, Aug 23 2024
STATUS
approved