%I #4 Nov 10 2014 07:08:17
%S 6,24,88,384,1606,7138,31380,141272,635686,2890884,13175784,60384934,
%T 277442652,1279055676,5909701748,27368939688,126981852654,
%U 590182327132,2747109920736,12804571294224,59756343262648,279183944932752
%N Number of length n+1 0..2*2 arrays with the sum of the absolute values of adjacent differences equal to n*2
%C Column 2 of A249982
%H R. H. Hardin, <a href="/A249976/b249976.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=6
%e ..0....2....3....1....0....2....3....1....2....3....0....1....4....2....0....0
%e ..1....0....2....3....4....4....2....2....3....1....3....2....3....0....0....4
%e ..4....4....2....1....0....2....4....3....1....3....3....4....1....2....4....3
%e ..4....1....1....1....1....3....0....0....3....1....1....3....4....4....1....2
%e ..1....1....4....4....2....0....3....1....0....0....4....0....3....0....1....4
%e ..4....2....0....1....3....2....2....4....0....3....4....4....0....0....4....0
%e ..2....0....3....3....2....4....1....1....4....1....0....3....2....2....2....0
%K nonn
%O 1,1
%A _R. H. Hardin_, Nov 10 2014