A247408 - OEIS

%I #6 Sep 16 2014 20:34:38

%S 0,40,428,6752,47592,225488,826488,2696652,7451396,19200532,44634008,

%T 96779936,196510032,380589596,700636600,1243173684,2124664616,

%U 3523145424,5673664032,8921020564,13691990956,20604281544,30407094956,44122851304

%N Number of length 4+4 0..n arrays with no disjoint pairs in any consecutive five terms having the same sum.

%C Row 4 of A247404.

%H R. H. Hardin, <a href="/A247408/b247408.txt">Table of n, a(n) for n = 1..69</a>

%e Some solutions for n=5

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

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

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

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

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

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_, Sep 16 2014