|
%I #4 Jun 12 2012 07:34:54
%S 121573668,422335348,1508740928,5451265872,19808276303,72188618371,
%T 263422708979,961420842175,3506529656386,12771245213778,
%U 46419273790680,168267481707156,607940940612132,2187698564614622,7835295875376792
%N Number of 0..3 arrays of length n+13 with sum less than 21 in any length 14 subsequence (=less than 50% duty cycle)
%C Column 7 of A213464
%H R. H. Hardin, <a href="/A213463/b213463.txt">Table of n, a(n) for n = 1..36</a>
%e Some solutions for n=3
%e ..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
%e ..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
%e ..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
%e ..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
%e ..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
%e ..0....0....0....2....2....0....2....2....2....0....0....0....0....2....0....2
%e ..0....2....0....0....0....0....0....0....0....0....2....2....0....0....2....0
%e ..2....0....2....0....0....2....2....2....0....0....0....0....2....0....0....0
%e ..2....0....0....0....2....0....0....2....0....2....0....2....0....0....2....2
%e ..2....0....0....2....0....0....0....0....0....2....0....2....2....2....0....2
%e ..2....3....2....3....3....1....2....0....1....0....2....0....1....3....1....1
%e ..1....1....1....1....2....1....2....3....2....1....3....0....3....0....2....0
%e ..1....1....1....3....3....1....3....2....0....2....1....3....0....3....0....3
%e ..0....3....3....0....1....1....1....0....1....3....2....2....2....0....2....0
%e ..2....0....1....3....0....3....0....3....0....3....0....2....0....0....2....0
%e ..0....3....2....2....3....0....1....3....1....2....2....3....3....2....2....1
%K nonn
%O 1,1
%A _R. H. Hardin_ Jun 12 2012
| 