cp's OEIS Frontend

A355800 Number of edges formed in a square 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 square.

%I A355800 #8 Jul 18 2022 09:47:37
%S A355800 4,12,48,196,592,1308,2992,5236,9296,14332,23704,31432,49592,64208,
%T A355800 87712,115524,158776,186660,255464,295532,374200,455064,574024,632836,
%U A355800 800568,923764,1092672,1238412,1515912,1613148,2001200,2191124,2516016,2847668,3223968,3485484,4167304,4523992,5042336
%N A355800 Number of edges formed in a square 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 square.
%C A355800 See A355798 for images of the squares.
%F A355800 a(n) = A355798(n) + A355799(n) - 1 by Euler's formula.
%Y A355800 Cf. A355798 (regions), A355799 (vertices), A355801 (k-gons), A255011 (all vertices), A290131, A331452, A335678.
%K A355800 nonn
%O A355800 1,1
%A A355800 _Scott R. Shannon_, Jul 17 2022