A248466 - OEIS

%I #4 Oct 06 2014 19:19:46

%S 42,288,4488,24160,105026,332940,948412,2299356,5183202,10554328,

%T 20406996,37023484,64595054,107536496,173894220,271712160,414759462,

%U 616455068,899198128,1284256968,1806180638,2496566424,3406477720

%N Number of length 5+2 0..n arrays with no three consecutive terms having the sum of any two elements equal to twice the third

%C Row 5 of A248461

%H R. H. Hardin, <a href="/A248466/b248466.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

%e ..1....1....0....0....1....0....0....3....2....1....3....4....2....4....0....2

%e ..4....0....0....2....1....3....3....4....0....3....3....4....4....0....4....1

%e ..1....0....1....0....5....3....1....1....2....3....0....2....1....1....5....2

%e ..5....5....5....3....1....4....0....5....0....5....3....4....1....4....5....5

%e ..0....5....0....0....2....0....3....4....2....0....0....5....5....2....3....3

%e ..4....3....1....5....1....0....3....1....2....5....2....0....0....5....0....2

%e ..5....3....1....4....4....2....5....0....0....0....3....3....3....4....0....5

%K nonn

%O 1,1

%A _R. H. Hardin_, Oct 06 2014