A197781 - OEIS

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

%S 9,1025,39748,1924263,88309448,4052348046,186804530634,8622121723045,

%T 397804283640646,18336405515418246,845373728575358353,

%U 38986854903558638616,1797850629942273258934,82902079988914118429426

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

%C Every 0 is next to 0 3's, every 1 is next to 1 2'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 A197782

%H R. H. Hardin, <a href="/A197781/b197781.txt">Table of n, a(n) for n = 1..48</a>

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Oct 18 2011