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A233086 Number of 5Xn 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally or antidiagonally, top left element zero, and 1 appearing before 2 in row major order.

%I A233086 #6 Jul 23 2025 07:51:51
%S A233086 136,9842,875165,77824814,6938214854,618844579511,55204524946337,
%T A233086 4924730456325950,439332915121147814,39192753113196729071,
%U A233086 3496374576586734284957,311910622275336283545350
%N A233086 Number of 5Xn 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally or antidiagonally, top left element zero, and 1 appearing before 2 in row major order.
%C A233086 Row 5 of A233082
%H A233086 R. H. Hardin, <a href="/A233086/b233086.txt">Table of n, a(n) for n = 1..210</a>
%F A233086 Empirical: a(n) = 132*a(n-1) -4507*a(n-2) +66832*a(n-3) -492772*a(n-4) +1765654*a(n-5) -2023881*a(n-6) -4686284*a(n-7) +16006509*a(n-8) -16068834*a(n-9) +5437152*a(n-10) for n>14
%e A233086 Some solutions for n=2
%e A233086 ..0..0....0..1....0..0....0..0....0..1....0..1....0..1....0..1....0..0....0..1
%e A233086 ..1..1....3..2....1..3....1..3....3..3....1..1....3..1....3..2....1..0....1..1
%e A233086 ..0..1....3..1....2..0....3..3....3..1....0..0....1..0....2..2....1..0....3..2
%e A233086 ..0..1....1..3....2..2....3..3....0..1....0..0....0..0....0..1....1..1....2..2
%e A233086 ..3..2....2..0....0..2....3..2....3..2....0..1....0..2....3..1....1..0....3..2
%K A233086 nonn
%O A233086 1,1
%A A233086 _R. H. Hardin_, Dec 03 2013