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A233159 Number of 6Xn 0..2 arrays with no element x(i,j) adjacent to value 2-x(i,j) horizontally or antidiagonally 1

%I #4 Dec 05 2013 05:58:56

%S 729,6144,93312,1417176,22692312,367125912,5986203912,97881138720,

%T 1602873102744,26263615856184,430448561176896,7055528832767376,

%U 115652113962870744,1895759819221508496,31075287281252187264

%N Number of 6Xn 0..2 arrays with no element x(i,j) adjacent to value 2-x(i,j) horizontally or antidiagonally

%C Row 6 of A233155

%H R. H. Hardin, <a href="/A233159/b233159.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = 30*a(n-1) -283*a(n-2) +1038*a(n-3) -573*a(n-4) -6705*a(n-5) +21056*a(n-6) -27636*a(n-7) +17216*a(n-8) -4128*a(n-9) for n>15

%e Some solutions for n=3

%e ..0..1..0....2..1..2....2..2..2....0..1..2....0..0..0....2..2..2....0..0..1

%e ..2..1..0....2..2..2....2..2..1....2..2..1....1..0..0....1..2..2....1..2..1

%e ..0..1..0....1..2..2....2..2..2....1..0..0....1..0..1....2..2..2....2..2..1

%e ..0..1..0....1..2..2....2..1..2....0..1..0....1..0..1....2..1..2....1..0..0

%e ..0..0..1....2..1..2....2..2..2....0..1..2....1..2..2....2..2..1....0..0..1

%e ..0..0..0....0..1..0....1..2..2....0..1..2....2..2..1....2..2..2....0..0..1

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 05 2013

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Last modified July 22 16:15 EDT 2024. Contains 374540 sequences. (Running on oeis4.)