A233235 - OEIS

%I #4 Dec 06 2013 13:50:45

%S 23,4504,1212549,338046654,94601758339,26484848685044,

%T 7415057313896849,2076029517168733114,581236325493128357679,

%U 162731637919752077883024,45560789933070584072872669,12755882058893937419188740854

%N Number of nX4 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, diagonally or antidiagonally, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order

%C Column 4 of A233239

%H R. H. Hardin, <a href="/A233235/b233235.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = 311*a(n-1) -8722*a(n-2) +10022*a(n-3) -1645*a(n-4) +35*a(n-5)

%e Some solutions for n=2

%e ..0..1..1..1....0..1..5..4....0..0..1..0....0..1..5..2....0..1..0..2

%e ..2..2..5..5....0..2..5..4....2..0..2..5....0..1..5..5....0..2..1..2

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 06 2013