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%I #5 Jan 02 2015 10:24:59
%S 558,6804,85464,1069400,13402934,167888152,2103506918,26352981590,
%T 330164967962,4136436492474,51823165353050,649263096931468,
%U 8134255022736090,101909518812574074,1276767300743745726
%N Number of (2+1)X(n+1) 0..2 arrays with every 2X2 subblock ne-sw antidiagonal difference unequal to its neighbors horizontally and nw+se diagonal sum unequal to its neighbors vertically
%C Row 2 of A253482
%H R. H. Hardin, <a href="/A253483/b253483.txt">Table of n, a(n) for n = 1..210</a>
%H R. H. Hardin, <a href="/A253483/a253483.txt">Empirical recurrence of order 90</a>
%F Empirical recurrence of order 90 (see link above)
%e Some solutions for n=3
%e ..0..1..0..0....1..2..1..2....2..0..0..2....0..2..1..0....1..1..1..0
%e ..0..1..2..0....0..1..1..1....0..1..2..2....1..2..0..1....2..0..1..2
%e ..0..0..1..0....2..0..1..0....2..2..0..2....2..2..1..0....2..1..0..0
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 02 2015
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