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A341764
The number of edges on a 2 by 1 ellipse formed by the straight line segments mutually connecting all points formed by dividing the ellipse into 2n equal angle sectors from its origin.
3
1, 8, 42, 148, 426, 984, 2022, 3604, 6138, 9492, 14642, 21108, 29902, 40728, 54786, 71604, 92722, 117384, 147578, 181810, 223782, 270808, 326262, 388308, 460446, 540424, 632322, 733364, 848318, 973732, 1115422, 1269108, 1441122, 1626888, 1833406, 2055444, 2300822, 2563544, 2852358, 3160050, 3497562
OFFSET
1,2
COMMENTS
The terms are from numeric computation - no formula for a(n) is currently known.
See A341688 for a description of the ellipse and images of the regions, and A341762 for images of the vertices.
FORMULA
a(n) = A341688(n) + A341762(n) - 1.
CROSSREFS
Cf. A341688 (regions), A341762 (vertices), A341800 (n-gons), A007678, A092867, A255011, A331929, A331931, A333075.
Sequence in context: A027903 A231069 A319235 * A256861 A287221 A119965
KEYWORD
nonn
AUTHOR
STATUS
approved