A367664 - OEIS

A367664

Number of edges formed in a hexagon by straight line segments when connecting the n-1 points between each corner that divide each edge into n equal parts to the n-1 points on the edge on the opposite side of the hexagon.

6, 18, 108, 474, 1452, 3720, 7932, 14598, 24864, 40374, 62772, 89694, 131208, 179370, 237732, 322494, 421548, 522348, 679920, 828330, 1010808, 1252932, 1527540, 1776846, 2146800, 2536038, 2939664, 3436632, 4040088, 4483548, 5335020, 6041532, 6773148, 7771926, 8678256, 9666300

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

See A367662 and A367663 for images of the hexagon.

LINKS

Table of n, a(n) for n=1..36.

FORMULA

a(n) = A367662(n) + A367663(n) - 1 by Euler's formula.

CROSSREFS

Cf. A367662 (regions), A367663 (vertices), A367665 (k-gons), A355800.

Sequence in context: A274499 A181038 A222857 * A361729 A108735 A143556