%I #5 Mar 31 2012 12:36:35
%S 41,8404,1749965,364637102,75987485516,15835552812749,
%T 3300094936852775,687733321797971342,143322307142433346196,
%U 29868095632655586533219,6224454258216624967544685,1297164418016611898106044912
%N Number of nX6 0..3 arrays with values 0..3 introduced in row major order and no element equal to any horizontal or vertical neighbor
%C Column 6 of A198715
%H R. H. Hardin, <a href="/A198713/b198713.txt">Table of n, a(n) for n = 1..200</a>
%F Empirical: a(n) = 313*a(n-1) -25836*a(n-2) +915863*a(n-3) -16213670*a(n-4) +144756201*a(n-5) -517271096*a(n-6) -1142631169*a(n-7) +16130100519*a(n-8) -49834494904*a(n-9) +41222570902*a(n-10) +81411834252*a(n-11) -186980689770*a(n-12) +120589827444*a(n-13) -21008679048*a(n-14)
%e Some solutions with all values from 0 to 3 for n=4
%e ..0..1..0..1..0..2....0..1..0..2..3..0....0..1..0..2..0..3....0..1..0..2..1..2
%e ..1..0..2..3..2..3....1..0..2..0..1..2....1..0..2..0..1..2....1..0..2..0..2..3
%e ..0..1..0..2..3..2....0..1..0..2..0..3....0..1..0..1..0..3....0..1..0..1..0..2
%e ..1..0..1..3..1..3....1..0..3..0..2..0....1..0..2..0..3..2....1..0..3..2..1..3
%K nonn
%O 1,1
%A _R. H. Hardin_ Oct 29 2011
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