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A247407 Number of length 3+4 0..n arrays with no disjoint pairs in any consecutive five terms having the same sum 1

%I #4 Sep 16 2014 08:14:04

%S 0,40,340,3200,17164,65500,201172,553328,1328468,2988588,6174668,

%T 12011408,22100648,39018756,66002280,108120340,171569292,265248372,

%U 399981360,590794408,854909260,1216187576,1701586288,2346377932

%N Number of length 3+4 0..n arrays with no disjoint pairs in any consecutive five terms having the same sum

%C Row 3 of A247404

%H R. H. Hardin, <a href="/A247407/b247407.txt">Table of n, a(n) for n = 1..70</a>

%e Some solutions for n=6

%e ..0....6....4....1....1....5....0....3....0....5....5....6....2....6....5....1

%e ..3....0....0....6....1....2....2....6....6....6....2....6....6....4....6....1

%e ..6....5....5....0....0....6....4....1....0....5....2....2....0....6....4....1

%e ..2....2....3....6....4....0....4....1....2....0....1....0....0....3....2....0

%e ..2....2....0....6....1....2....1....2....3....2....0....5....3....2....6....6

%e ..0....1....6....4....1....2....4....4....0....6....2....5....4....2....3....4

%e ..2....2....6....6....6....2....0....6....6....5....2....5....2....2....2....0

%K nonn

%O 1,2

%A _R. H. Hardin_, Sep 16 2014

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Last modified February 20 18:38 EST 2024. Contains 370217 sequences. (Running on oeis4.)