A333116 The number of vertices inside a hexagram formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts.

109, 2761, 16387, 63943, 167071, 357919, 711895, 1283419, 2040187, 3173851, 4909351, 6730795, 9868711, 13101883, 16984963, 23055523, 29896135, 36496711, 47223703, 56703265, 68999605, 84927301, 103692535, 119208667

Offset: 1

Author

Scott R. Shannon and N. J. A. Sloane, Mar 08 2020

Keywords

• nonn
• more

Comments

See the links in A331908 for images of the hexagrams.

Links

• Index entries for sequences related to stained glass windows

Crossrefs

Cf. A331908 (regions), A331909 (n-gons), A333049 (edges), A092866, A332599, A007569.

Extensions

a(6)-a(24) from Lars Blomberg, May 10 2020