A196862 - OEIS

%I #5 Mar 31 2012 12:36:27

%S 1,13,113,787,7428,62298,494579,3938849,31419870,250968250,2008718820,

%T 16085753439,128812555358,1031543802305,8260521035929,66148710544824,

%U 529714073173089,4241953681722567,33969698176325537,272030805637262923

%N Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,4,2,0,1 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 2's, every 3 is next to 3 0's, every 4 is next to 4 1's

%C Column 7 of A196863

%H R. H. Hardin, <a href="/A196862/b196862.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Oct 06 2011