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%I #5 Aug 11 2014 22:45:54
%S 314,1994,85196,606224,22328204,161835904,6209914254,44707108238,
%T 1699524352562,12251017200366,466469474405852,3361933958777160,
%U 127984378310902748,922429449651301216,35115886181142148294
%N Number of (n+3)X(4+3) 0..3 white 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 A230949
%H R. H. Hardin, <a href="/A230945/b230945.txt">Table of n, a(n) for n = 1..210</a>
%H R. H. Hardin, <a href="/A230945/a230945.txt">Empirical recurrence of order 70</a>
%F Empirical recurrence of order 70 (see link above)
%e Some solutions for n=2
%e ..0..x..1..x..3..x..3....0..x..1..x..1..x..3....0..x..0..x..0..x..2
%e ..x..1..x..2..x..0..x....x..1..x..2..x..0..x....x..1..x..1..x..3..x
%e ..2..x..2..x..1..x..3....0..x..2..x..3..x..3....0..x..2..x..3..x..2
%e ..x..3..x..1..x..2..x....x..3..x..1..x..3..x....x..3..x..2..x..0..x
%e ..2..x..0..x..1..x..1....2..x..2..x..0..x..2....2..x..2..x..1..x..3
%K nonn
%O 1,1
%A _R. H. Hardin_, Nov 01 2013