A196652 - OEIS

%I #5 Mar 31 2012 12:36:26

%S 13,275,2178,37661,689313,10183698,163282859,2644969245,42258577643,

%T 676570815905,10841400740070,173671897740728,2782146287996664,

%U 44567043932430607,713930349360876103,11436736386929595699

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

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

%C Column 7 of A196653

%H R. H. Hardin, <a href="/A196652/b196652.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Oct 04 2011