A197560 - OEIS

%I #5 Mar 31 2012 12:36:30

%S 13,275,5280,139477,2817383,64257852,1435938748,31372791803,

%T 696517116880,15437789226545,341765449897848,7569824125142348,

%U 167639023580466828,3712571610572571780,82219714950533940171,1820858468171700800429

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

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

%C Column 7 of A197561

%H R. H. Hardin, <a href="/A197560/b197560.txt">Table of n, a(n) for n = 1..153</a>

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Oct 16 2011