%I #4 Mar 31 2012 12:36:40
%S 6,21,75,267,938,3283,11516,40399,141745,497298,1744684,6121152,
%T 21475315,75342932,264330011,927363850,3253519870,11414498822,
%U 40046099291,140495874086,492909198404,1729299730308,6066994825927,21285162746386
%N Number of 0..5 arrays x(0..n-1) of n elements with each no smaller than the sum of its three previous neighbors modulo 6
%C Column 5 of A200668
%e Some solutions for n=6
%e ..0....2....3....0....3....4....1....1....2....0....2....4....0....1....0....1
%e ..3....4....3....0....5....5....5....4....2....3....2....5....1....3....1....2
%e ..3....1....0....0....5....3....2....5....5....5....5....4....5....5....5....3
%e ..1....2....5....0....3....4....5....4....5....4....3....2....1....4....3....3
%e ..2....5....3....0....4....3....4....4....4....5....4....5....2....3....4....3
%e ..5....3....3....4....4....4....5....3....4....4....0....5....2....1....4....3
%K nonn
%O 1,1
%A _R. H. Hardin_ Nov 20 2011