A330845 - OEIS

%I #39 May 12 2020 05:45:02

%S 42,708,4020,15120,38544,83136,169686,294678,475500,746340,1140624,

%T 1581612,2296986,3055734,3980526,5391264,7003662,8516346,11094810,

%U 13280970,16180932,19971282,24277212,28090218,33683862,39656604,45901494,53121744,62678268,69382632

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

%C See the links in A331931 for images of the hexagons.

%Y Cf. A331931 (regions), A331932 (n-gons), A330846 (vertices), A274586 , A332600, A331765.

%K nonn

%O 1,1

%A _Scott R. Shannon_ and _N. J. A. Sloane_, Mar 07 2020

%E a(9)-a(30) from _Lars Blomberg_, May 12 2020