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Number of (n+1)X(3+1) 0..3 arrays with every 2X2 subblock having the sum of the absolute values of the edge differences equal to 6
1

%I #6 Aug 11 2014 22:45:56

%S 4974,150054,4350820,130732438,3912088926,117571581104,3530630987208,

%T 106103463522318,3187954907098334,95800942354485530,

%U 2878719458096776464,86506426202241796704,2599495648181112747454,78115122641805183994432

%N Number of (n+1)X(3+1) 0..3 arrays with every 2X2 subblock having the sum of the absolute values of the edge differences equal to 6

%C Column 3 of A233635

%H R. H. Hardin, <a href="/A233630/b233630.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A233630/a233630_1.txt">Empirical recurrence of order 63</a>

%F Empirical recurrence of order 63 (see link above)

%e Some solutions for n=2

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 14 2013