A251424 - OEIS

%I #4 Dec 02 2014 17:33:51

%S 29,237,1113,6589,34893,183341,938895,4771117,24063611,120999825,

%T 606973965,3041165657,15225030583,76186376289,381124730885,

%U 1906242140613,9533185117349,47672275138133,238381757180439,1191974407973189

%N Number of length n+2 0..4 arrays with the sum of the maximum minus twice the median plus the minimum of adjacent triples multiplied by some arrangement of +-1 equal to zero

%C Column 4 of A251428

%H R. H. Hardin, <a href="/A251424/b251424.txt">Table of n, a(n) for n = 1..81</a>

%e Some solutions for n=6

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

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

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 02 2014