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Number of (n+2)X(1+2) 0..3 arrays with no increasing sequence of length 3 horizontally, diagonally downwards or vertically
1

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

%S 172952,8254896,386906152,18116531520,846914338316,39587056212137,

%T 1850126770689608,86465768048368472,4040923982272526872,

%U 188849818269171055054,8825754751934559124956,412464977706204443514728

%N Number of (n+2)X(1+2) 0..3 arrays with no increasing sequence of length 3 horizontally, diagonally downwards or vertically

%C Column 1 of A233488

%H R. H. Hardin, <a href="/A233483/b233483.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A233483/a233483.txt">Empirical recurrence of order 60</a>

%F Empirical recurrence of order 60 (see link above)

%e Some solutions for n=1

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 11 2013