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Number of length 7+4 0..n arrays with no five consecutive terms having two times the sum of any three elements equal to three times the sum of the remaining two
1

%I #4 Oct 18 2014 19:54:29

%S 1546,41084,973204,11810564,105819690,589354152,2869206494,

%T 10716918348,36428481062,108634995458,299997171280,746679315998,

%U 1771285007396,3889902082248,8233803171560,16491148207236,31949943270148

%N Number of length 7+4 0..n arrays with no five consecutive terms having two times the sum of any three elements equal to three times the sum of the remaining two

%C Row 7 of A249001

%H R. H. Hardin, <a href="/A249008/b249008.txt">Table of n, a(n) for n = 1..65</a>

%e Some solutions for n=2

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

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

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

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

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

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Oct 18 2014