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%I #7 May 21 2021 07:03:58
%S 5,37,353,1761,8917,26773,84497,215545,508613,1044825,2184125,4036481,
%T 7550669,13068897,21666789,34540637,55656469,84953609,130542493,
%U 192747673,278927225,393687369,559130085,770515489,1059144047
%N Number of nodes in the graph AC(n,n).
%C Taken from _Lars Blomberg_'s b-file for A288180.
%H Lars Blomberg, Scott R. Shannon, and N. J. A. Sloane, <a href="http://neilsloane.com/doc/rose_5.pdf">Graphical Enumeration and Stained Glass Windows, 1: Rectangular Grids</a>, (2020). Also arXiv:2009.07918.
%Y Main diagonal of triangle A288180.
%K nonn
%O 1,1
%A _N. J. A. Sloane_, May 17 2021