cp's OEIS Frontend

A335354 a(n) is the number of edges in the central polygon formed in a square by dividing each of its sides into n equal parts giving a total of 4*n nodes and drawing straight line segments from node k to node (k+n+1) mod 4*n, 0 <= k < 4*n.

%I A335354 #6 Jun 04 2020 08:18:38
%S A335354 0,8,4,8,12,16,12,16,20,16,20,24,28,24,28,32,28,32,36,32,36,40,44,40,
%T A335354 44,48,44,48,52,56,52,56,60,56,60,64,68,64,68,72,68,72,76,72,76,80,84,
%U A335354 80,84,88,84,88,92,96,92,96,100,96,100,104,100,104,108,112
%N A335354 a(n) is the number of edges in the central polygon formed in a square by dividing each of its sides into n equal parts giving a total of 4*n nodes and drawing straight line segments from node k to node (k+n+1) mod 4*n, 0 <= k < 4*n.
%C A335354 For n=1 there is no central polygon.
%C A335354 The number of edges of the central polygon tends to grow as n increases, whereas for n = 16..500 the polygon with next-to-most edges has 8 of them.
%C A335354 See A335350 for illustrations.
%H A335354 Lars Blomberg, <a href="/A335354/b335354.txt">Table of n, a(n) for n = 1..500</a>
%Y A335354 Cf. A335350 (regions), A335351 (edges), A335352 (vertices), A335353 (n-gons), A255011, A335057, A335192.
%K A335354 nonn
%O A335354 1,2
%A A335354 _Lars Blomberg_, Jun 04 2020