A197804 - OEIS

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

%S 9,1601,139212,12108247,1067467454,94343594548,8356101105886,

%T 738902613491053,65378440919070707,5783165458408517862,

%U 511560923077285542005,45254949485645786464236,4003399792733695557796480

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

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

%C Column 7 of A197805

%H R. H. Hardin, <a href="/A197804/b197804.txt">Table of n, a(n) for n = 1..45</a>

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Oct 18 2011