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%I #5 Aug 11 2014 22:45:56
%S 1220,8324,56212,411848,3007000,22597004,168812492,1277805668,
%T 9619090052,72923111912,550545635664,4173813523988,31551152184268,
%U 239127142655612,1808804180109732,13705085820170408,103705720260565068
%N Number of (n+1)X(2+1) 0..6 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 26
%C Column 2 of A233665
%H R. H. Hardin, <a href="/A233660/b233660.txt">Table of n, a(n) for n = 1..210</a>
%H R. H. Hardin, <a href="/A233660/a233660.txt">Empirical recurrence of order 74</a>
%F Empirical recurrence of order 74 (see link above)
%e Some solutions for n=3
%e ..5..2..5....4..5..4....5..1..0....1..2..4....4..1..2....2..4..5....5..2..0
%e ..2..0..2....4..1..4....4..1..4....1..5..2....4..5..2....4..1..1....3..0..3
%e ..5..2..5....6..4..2....5..1..5....2..2..0....1..5..1....5..5..4....3..4..3
%e ..5..6..5....3..1..4....5..4..5....1..5..3....2..5..4....4..1..1....0..4..0
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 14 2013