%I
%S 1,2,5,13,44,168,717,3360,17091,93492,545670,3372738,21911216,
%T 148486735,1041923520,7518618028,55460237723,416078640459,
%U 3161904730760,24261222270154,187499556005523,1456815538485716,11363752138036864
%N Number of 0..7 arrays of length n with no adjacent pair equal to its immediately preceding adjacent pair, and new values introduced in 0..7 order
%C Column 7 of A212829
%H R. H. Hardin, <a href="/A212828/b212828.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 22*a(n1) 168*a(n2) +440*a(n3) +421*a(n4) 2898*a(n5) 924*a(n6) +7944*a(n7) +5931*a(n8) 6610*a(n9) 10562*a(n10) 5040*a(n11) 840*a(n12) for n>15
%e Some solutions for n=8
%e ..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
%e ..1....0....1....1....1....1....1....1....1....1....1....1....1....0....0....1
%e ..2....1....2....2....2....0....1....0....2....1....1....2....2....1....1....1
%e ..2....1....1....0....2....2....2....2....3....0....0....3....3....2....2....2
%e ..3....1....3....1....0....0....1....3....2....1....2....3....0....1....1....1
%e ..4....2....2....2....2....3....3....0....4....2....1....0....1....1....1....1
%e ..3....3....4....1....1....3....4....0....1....1....0....1....4....1....3....2
%e ..5....0....4....0....0....4....4....0....4....0....0....3....4....3....0....2
%K nonn
%O 1,2
%A _R. H. Hardin_ May 28 2012
