cp's OEIS Frontend

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.

%I A367664 #8 Nov 26 2023 08:39:40
%S A367664 6,18,108,474,1452,3720,7932,14598,24864,40374,62772,89694,131208,
%T A367664 179370,237732,322494,421548,522348,679920,828330,1010808,1252932,
%U A367664 1527540,1776846,2146800,2536038,2939664,3436632,4040088,4483548,5335020,6041532,6773148,7771926,8678256,9666300
%N 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.
%C A367664 See A367662 and A367663 for images of the hexagon.
%F A367664 a(n) = A367662(n) + A367663(n) - 1 by Euler's formula.
%Y A367664 Cf. A367662 (regions), A367663 (vertices), A367665 (k-gons), A355800.
%K A367664 nonn
%O A367664 1,1
%A A367664 _Scott R. Shannon_, Nov 26 2023