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A231849 Number of n X n 0..2 arrays with no element having a strict majority of its horizontal and antidiagonal neighbors equal to itself plus one mod 3, with upper left element zero (rock paper and scissors drawn positions).

%I A231849 #8 Jun 02 2025 08:47:52
%S A231849 1,8,656,360966,1454768048,40798265169064,8071247819035667716,
%T A231849 11185076987915709283036466,108785685563255533314439981136006,
%U A231849 7419232013005838043632372688640525508734
%N A231849 Number of n X n 0..2 arrays with no element having a strict majority of its horizontal and antidiagonal neighbors equal to itself plus one mod 3, with upper left element zero (rock paper and scissors drawn positions).
%C A231849 Diagonal of A231855
%H A231849 R. H. Hardin, <a href="/A231849/b231849.txt">Table of n, a(n) for n = 1..11</a>
%e A231849 Some solutions for n=3
%e A231849 ..0..2..1....0..2..2....0..2..1....0..0..0....0..2..2....0..0..2....0..0..0
%e A231849 ..2..0..0....2..0..0....2..1..1....1..0..0....2..0..1....1..2..0....1..0..2
%e A231849 ..0..1..1....1..1..2....1..1..1....1..2..2....1..2..0....1..1..2....2..2..2
%K A231849 nonn
%O A231849 1,2
%A A231849 _R. H. Hardin_, Nov 14 2013