A249956 - OEIS

%I #4 Nov 09 2014 17:50:13

%S 8790,31180,111746,402010,1447334,5207128,18707320,67741331,245362806,

%T 888353351,3214054074,11619045815,41973825395,151838831019,

%U 549477715623,1988574285707,7195624944829,26029899268167,94135791585627

%N Number of length n+5 0..4 arrays with no six consecutive terms having the maximum of any two terms equal to the minimum of the remaining four terms

%C Column 4 of A249960

%H R. H. Hardin, <a href="/A249956/b249956.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

%e ..3....1....2....1....4....4....3....4....2....3....3....4....2....3....3....3

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

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

%e ..2....2....3....3....2....2....3....4....3....2....4....4....4....3....4....3

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 09 2014