A233706 - OEIS

%I #5 Aug 11 2014 22:45:56

%S 164860,7442986,336085716,15181195220,684540459662,30867953018180,

%T 1391576275588606,62734772781863860,2828089225813921212,

%U 127490606293041633351,5747257439547644528906,259085528588813709797896

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

%C Row 1 of A233705

%H R. H. Hardin, <a href="/A233706/b233706.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A233706/a233706.txt">Empirical recurrence of order 88</a>

%F Empirical recurrence of order 88 (see link above)

%e Some solutions for n=1

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 15 2013