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A230756 Number of (n+3)X(7+3) 0..2 arrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero.

%I A230756 #6 Jul 23 2025 06:00:16
%S A230756 46949808,90231813552,194576103540300,350956390609736652,
%T A230756 645610139671314494208,1173949802576478433728192,
%U A230756 2135728868490621147879828300,3882954971416088390717475507468
%N A230756 Number of (n+3)X(7+3) 0..2 arrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero.
%C A230756 Column 7 of A230757
%H A230756 R. H. Hardin, <a href="/A230756/b230756.txt">Table of n, a(n) for n = 1..114</a>
%e A230756 Some solutions for n=1
%e A230756 ..0..2..0..1..0..1..2..1..2..2....0..0..0..0..0..2..2..0..2..0
%e A230756 ..1..1..0..0..2..1..2..0..0..1....2..1..1..0..1..1..0..0..1..1
%e A230756 ..2..2..1..2..0..0..1..1..0..2....2..1..1..2..0..0..1..1..0..2
%e A230756 ..1..0..1..2..1..0..2..2..1..2....0..0..0..2..2..2..2..2..0..2
%K A230756 nonn
%O A230756 1,1
%A A230756 _R. H. Hardin_, Oct 29 2013