cp's OEIS Frontend

A233080 Number of n X 6 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 A233080 #8 Oct 07 2018 08:36:19
%S A233080 122,32414,8662343,2315298290,618844579511,165407945648306,
%T A233080 44211082661517335,11816964557611382642,3158498796072853930295,
%U A233080 844219731401266443119474,225647372661155279429241623
%N A233080 Number of n X 6 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.
%H A233080 R. H. Hardin, <a href="/A233080/b233080.txt">Table of n, a(n) for n = 1..210</a>
%F A233080 Empirical: a(n) = 283*a(n-1) - 4251*a(n-2) + 13573*a(n-3) - 9604*a(n-4).
%F A233080 Empirical g.f.: x*(122 - 2112*x + 7803*x^2 - 8771*x^3) / ((1 - x)*(1 - 282*x + 3969*x^2 - 9604*x^3)). - _Colin Barker_, Oct 07 2018
%e A233080 Some solutions for n=2:
%e A233080 ..0..1..0..0..2..0....0..0..1..1..3..3....0..1..3..2..2..2....0..1..0..2..0..1
%e A233080 ..1..1..0..0..2..2....1..1..0..1..1..0....0..1..0..2..0..1....0..2..2..2..0..2
%Y A233080 Column 6 of A233082.
%K A233080 nonn
%O A233080 1,1
%A A233080 _R. H. Hardin_, Dec 03 2013