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%I #5 Aug 11 2014 22:45:54
%S 314,10534,85196,3160834,22328204,859128648,6209914254,235891268252,
%T 1699524352562,64719602281334,466469474405852,17757501795145746,
%U 127984378310902748,4872242085182488788,35115886181142148294
%N Number of (n+3)X(4+3) 0..3 black square subarrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, and upper left element zero
%C Column 4 of A231023
%H R. H. Hardin, <a href="/A231021/b231021.txt">Table of n, a(n) for n = 1..210</a>
%H R. H. Hardin, <a href="/A231021/a231021.txt">Empirical recurrence of order 70</a>
%F Empirical recurrence of order 70 (see link above)
%e Some solutions for n=2
%e ..x..0..x..0..x..0..x....x..0..x..0..x..2..x....x..0..x..2..x..2..x
%e ..1..x..3..x..1..x..3....3..x..1..x..3..x..3....0..x..1..x..3..x..3
%e ..x..2..x..2..x..1..x....x..0..x..2..x..0..x....x..1..x..2..x..0..x
%e ..1..x..1..x..0..x..2....3..x..1..x..1..x..3....2..x..0..x..1..x..3
%e ..x..0..x..0..x..3..x....x..0..x..0..x..2..x....x..3..x..0..x..0..x
%K nonn
%O 1,1
%A _R. H. Hardin_, Nov 03 2013
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