cp's OEIS Frontend

A251424 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.

%I A251424 #6 Jul 23 2025 13:19:54
%S A251424 29,237,1113,6589,34893,183341,938895,4771117,24063611,120999825,
%T A251424 606973965,3041165657,15225030583,76186376289,381124730885,
%U A251424 1906242140613,9533185117349,47672275138133,238381757180439,1191974407973189
%N A251424 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 A251424 Column 4 of A251428
%H A251424 R. H. Hardin, <a href="/A251424/b251424.txt">Table of n, a(n) for n = 1..81</a>
%e A251424 Some solutions for n=6
%e A251424 ..0....0....0....1....1....1....0....1....1....0....0....1....0....1....1....0
%e A251424 ..4....0....0....1....4....1....4....1....0....0....4....3....3....4....1....1
%e A251424 ..4....4....4....2....3....0....3....1....0....2....2....3....3....2....4....0
%e A251424 ..1....4....0....2....2....0....0....4....3....1....1....2....2....3....3....1
%e A251424 ..1....0....3....0....2....4....3....3....3....3....3....2....1....1....1....4
%e A251424 ..2....3....0....4....2....3....2....3....0....0....4....4....1....2....0....3
%e A251424 ..3....0....2....0....1....3....1....1....4....0....2....0....4....4....1....4
%e A251424 ..2....0....1....3....1....0....3....0....4....2....0....0....0....2....3....0
%K A251424 nonn
%O A251424 1,1
%A A251424 _R. H. Hardin_, Dec 02 2014