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A332418 The number of vertices on a decagon formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts. 4
171, 3581, 23651, 80191, 213041, 444251, 862711, 1481141, 2413721, 3701951, 5493891, 7765621, 10833601, 14589491, 19315751, 25064491, 32107771, 40337021, 50328771, 61790891, 75318371 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

See the links in A333139 for images of the decagons.

LINKS

Table of n, a(n) for n=1..21.

CROSSREFS

Cf. A333139 (regions), A332417 (n-gons), A332419 (edges), A330846, A092866, A332599, A007569.

Sequence in context: A185611 A195279 A016058 * A152926 A239270 A262142

Adjacent sequences:  A332415 A332416 A332417 * A332419 A332420 A332421

KEYWORD

nonn,more

AUTHOR

Scott R. Shannon and N. J. A. Sloane, Mar 09 2020

EXTENSIONS

a(6)-a(21) from Lars Blomberg, May 18 2020

STATUS

approved

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Last modified August 13 14:01 EDT 2022. Contains 356091 sequences. (Running on oeis4.)