A213461 - OEIS

%I #4 Jun 12 2012 07:30:22

%S 466136,1568984,5444644,19105020,67329406,237475982,836356119,

%T 2935825527,10254646515,35582811585,122434373801,422379318044,

%U 1462308785872,5075439138225,17643670747421,61385086115242,213624545918282

%N Number of 0..3 arrays of length n+9 with sum less than 15 in any length 10 subsequence (=less than 50% duty cycle)

%C Column 5 of A213464

%H R. H. Hardin, <a href="/A213461/b213461.txt">Table of n, a(n) for n = 1..61</a>

%e Some solutions for n=3

%e ..0....0....2....2....0....2....0....2....0....2....2....2....0....0....0....0

%e ..0....0....0....0....2....0....0....0....2....2....2....0....0....2....2....2

%e ..0....2....0....2....0....0....0....2....2....2....0....0....2....0....2....2

%e ..0....0....2....2....2....2....2....0....2....0....2....2....0....0....0....2

%e ..2....2....0....0....2....2....2....0....2....2....0....2....2....0....2....0

%e ..0....0....0....0....0....2....0....2....0....2....0....0....0....0....0....2

%e ..1....0....0....2....0....0....0....0....2....2....0....2....0....0....2....0

%e ..2....1....3....1....3....3....0....2....1....0....1....2....2....2....0....0

%e ..1....1....2....0....1....0....3....2....0....1....0....1....3....3....3....1

%e ..2....2....0....1....3....0....1....1....1....0....3....1....0....2....1....2

%e ..3....1....1....3....1....2....3....0....1....0....0....0....2....0....2....3

%e ..1....2....2....0....2....3....3....0....1....1....1....3....3....2....2....2

%K nonn

%O 1,1

%A _R. H. Hardin_ Jun 12 2012