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Number of nX6 0..4 arrays with each element equal to the number its horizontal and vertical neighbors equal to itself
1

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

%S 2,2,25,118,417,746,2906,10899,31616,88860,304443,1013184,3033869,

%T 9608917,30808108,97784400,307889267,971517454,3088012323,9793418941,

%U 30915299775,97797652156,310274504503,981649179185,3105621771879

%N Number of nX6 0..4 arrays with each element equal to the number its horizontal and vertical neighbors equal to itself

%C Column 6 of A195969

%H R. H. Hardin, <a href="/A195967/b195967.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Sep 25 2011