%I #5 Dec 18 2013 20:59:41
%S 61,3059,591711,454996327,1394283842243,17100147398257787,
%T 841477590887025128591,166464986867345392587609693,
%U 132584609704248220162949309257517
%N Number of (n+1)X(n+1) 0..4 arrays with every 2X2 subblock having the absolute values of all six edge and diagonal differences no larger than 1
%C Diagonal of A234036
%H R. H. Hardin, <a href="/A234028/b234028.txt">Table of n, a(n) for n = 1..10</a>
%e Some solutions for n=2
%e ..1..1..1....4..4..4....3..3..2....3..4..4....4..3..3....2..1..1....2..2..2
%e ..2..2..2....3..3..4....2..3..2....4..4..4....3..4..3....1..1..1....3..2..1
%e ..3..3..2....4..4..3....2..3..3....4..4..4....3..4..4....1..1..2....3..2..1
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 18 2013