%I #5 Aug 11 2014 22:45:56
%S 342185,20463326,1228836823,73856970690,4437742405449,266642245870341,
%T 16020595216911881,962558718514483306,57832813368256439630,
%U 3474731841444380222451,208770030278144266959124
%N Number of (2+2)X(n+2) 0..2 arrays with no increasing sequence of length 3 horizontally, vertically or antidiagonally downwards
%C Row 2 of A233602
%H R. H. Hardin, <a href="/A233604/b233604.txt">Table of n, a(n) for n = 1..210</a>
%H R. H. Hardin, <a href="/A233604/a233604.txt">Empirical recurrence of order 61</a>
%F Empirical recurrence of order 61 (see link above)
%e Some solutions for n=1
%e ..0..2..1....0..2..1....0..1..0....0..1..0....0..2..2....0..0..1....0..2..2
%e ..1..0..1....1..0..1....0..2..1....1..2..1....1..0..1....0..2..1....2..0..1
%e ..1..2..1....1..1..2....2..1..0....1..2..0....0..2..2....0..0..1....1..2..1
%e ..2..0..0....1..0..1....1..2..1....2..2..0....1..1..1....1..2..0....0..1..1
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 14 2013