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

%I #4 Nov 03 2014 09:58:52

%S 2,53,164,485,1408,3221,6678,12377,20572,33877,51568,74947,105310,

%T 143727,195754,259799,336688,428339,536286,671719,828944,1009781,

%U 1216838,1452459,1732578,2047055,2399248,2791887,3227102,3727571,4279592,4886643

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

%C Row 3 of A249656

%H R. H. Hardin, <a href="/A249659/b249659.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=6

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

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 03 2014