%I #5 Jun 12 2020 09:22:59
%S 4,5,32,29,96,69,192,169,324,285,492,409,696,629,936,865,1208,1117,
%T 1508,1429,1852,1757,2232,2089,2648,2521,3100,2961,3580,3425,4092,
%U 3949,4648,4477,5240,5029,5860,5665,6516,6325,7204,7001,7936,7737,8696,8473,9500
%N a(n) is the number of vertices formed by n-secting the angles of a square.
%C See A278823 for illustrations.
%Y Cf. A335411, A278823 (regions), A335527 (edges), A335528 (ngons).
%K nonn
%O 1,1
%A _Lars Blomberg_, Jun 12 2020