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

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

%S 13,487,10970,280860,7352954,200038888,5388703976,145478400315,

%T 3933296800409,106294282176389,2872553552092524,77641656013643280,

%U 2098667174973445583,56728541446185446120,1533438828790467176239

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

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

%C Column 7 of A196912

%H R. H. Hardin, <a href="/A196911/b196911.txt">Table of n, a(n) for n = 1..121</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Oct 07 2011