A197430 - OEIS

%I #5 Mar 31 2012 12:36:29

%S 25,2107,55567,4017895,195632425,9869104795,529968166606,

%T 27927270266251,1461399711177586,76357681634837889,

%U 4016048479413867754,210995429397329769859,11066069030221109085243,581180575552246936955138

%N Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,0,1,1,1 for x=0,1,2,3,4

%C Every 0 is next to 0 4's, every 1 is next to 1 0's, every 2 is next to 2 1's, every 3 is next to 3 1's, every 4 is next to 4 1's

%C Column 7 of A197431

%H R. H. Hardin, <a href="/A197430/b197430.txt">Table of n, a(n) for n = 1..50</a>

%e Some solutions containing all values 0 to 4 for n=4

%e ..0..0..1..2..0..0..0....0..0..0..1..3..1..0....0..0..1..1..0..1..1

%e ..0..2..1..1..3..1..2....0..2..1..4..1..1..1....0..0..1..4..1..2..0

%e ..1..1..0..0..1..4..1....1..1..4..1..0..0..1....1..1..3..1..1..0..0

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Oct 14 2011