A196328 - OEIS

%I #5 Mar 31 2012 12:36:25

%S 13,209,1596,15029,140502,1281418,11937347,110090749,1017881679,

%T 9413849312,87009516622,804446182456,7437062770474,68754061673931,

%U 635629034112919,5876322569573781,54326047570786412,502239418434390677

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

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

%C Column 7 of A196329

%H R. H. Hardin, <a href="/A196328/b196328.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Oct 01 2011