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%I #4 May 06 2012 19:27:42
%S 435,1113,2902,7596,19834,51440,131950,339564,876777,2267261,5864274,
%T 15159987,39161060,101136977,261240954,674934552,1743897567,
%U 4505828919,11641402990,30075908053,77701600604,200746256554,518645274018
%N Number of 0..2 arrays of length n+5 with sum no more than 6 in any length 6 subsequence (=50% duty cycle)
%C Column 3 of A212232
%H R. H. Hardin, <a href="/A212227/b212227.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=3
%e ..1....0....2....1....1....1....1....0....2....0....2....2....2....0....0....0
%e ..0....0....1....1....2....1....0....1....0....1....0....0....2....1....0....0
%e ..0....2....0....1....1....2....0....0....2....0....1....0....0....0....1....0
%e ..0....0....1....1....1....0....1....2....0....0....2....2....1....0....1....0
%e ..2....2....0....0....0....1....2....2....1....1....0....0....1....2....0....0
%e ..1....0....2....0....0....1....1....0....0....1....1....2....0....1....2....2
%e ..0....1....1....1....2....0....0....0....0....1....2....1....2....0....0....2
%e ..1....0....1....1....0....2....0....0....0....0....0....0....1....1....1....1
%K nonn
%O 1,1
%A _R. H. Hardin_ May 06 2012
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