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Number of length 3+4 0..n arrays with every five consecutive terms having two times the sum of some three elements equal to three times the sum of the remaining two
1

%I #4 Oct 18 2014 19:32:33

%S 2,53,204,585,2042,6065,12644,24583,40878,72399,115668,180421,260514,

%T 371185,521910,723925,962888,1263913,1604166,2067027,2592298,3230455,

%U 3942088,4781303,5766434,6934955,8208132,9682923,11277354,13209205

%N Number of length 3+4 0..n arrays with every five consecutive terms having two times the sum of some three elements equal to three times the sum of the remaining two

%C Row 3 of A248987

%H R. H. Hardin, <a href="/A248990/b248990.txt">Table of n, a(n) for n = 1..147</a>

%e Some solutions for n=6

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

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Oct 18 2014