A249978 - OEIS

%I #8 Nov 16 2014 03:34:28

%S 10,64,426,3030,22560,168506,1293326,9937894,77372824,604180880,

%T 4749038012,37448196486,296429721556,2352824897458,18723425845436,

%U 149319341015310,1193131013642304,9549922015472032,76554889282313192

%N Number of length n+1 0..2 X 4 arrays with the sum of the absolute values of adjacent differences equal to n*4.

%C Column 4 of A249982

%H R. H. Hardin, <a href="/A249978/b249978.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=6

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

%e ..1....2....8....7....7....3....8....8....4....0....1....8....3....0....8....6

%e ..5....3....6....6....0....3....2....4....3....8....6....3....6....6....0....1

%e ..3....8....7....3....0....8....0....2....0....0....3....1....1....0....3....6

%e ..8....2....6....7....4....5....8....0....7....3....0....2....0....7....7....1

%e ..2....8....0....8....8....0....8....6....3....3....7....0....8....6....5....4

%e ..6....4....7....0....6....8....5....2....8....0....1....8....3....5....6....3

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 10 2014