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Number of length n+6 0..3 arrays with every seven consecutive terms having the maximum of some three terms equal to the minimum of the remaining four terms
1

%I #4 Nov 19 2014 16:32:19

%S 8964,24566,69984,202184,584904,1680652,4766064,13262440,37406584,

%T 106733108,306510784,883092532,2547336424,7346752856,21169604112,

%U 61041637594,176340932776,510406546962,1479462558424,4292455882114

%N Number of length n+6 0..3 arrays with every seven consecutive terms having the maximum of some three terms equal to the minimum of the remaining four terms

%C Column 3 of A250373

%H R. H. Hardin, <a href="/A250368/b250368.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

%e ..0....0....1....0....0....1....2....2....1....0....1....0....1....1....2....0

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

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

%e ..2....1....0....0....2....1....2....2....2....0....0....2....0....1....2....1

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 19 2014