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Number of length 3+6 0..n arrays with no seven consecutive terms having five times the sum of any two elements equal to two times the sum of the remaining five
0

%I #3 Oct 23 2014 08:45:48

%S 496,11874,183516,1287632,6631348,26526142,89437990,259680594,

%T 678836386,1608960332,3563385010,7370543098,14518880248,27241408064,

%U 49261449504,85646747520,144718409622,237078221134

%N Number of length 3+6 0..n arrays with no seven consecutive terms having five times the sum of any two elements equal to two times the sum of the remaining five

%C Row 3 of A249212

%e Some solutions for n=3

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

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

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

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Oct 23 2014