A232152 - OEIS

%I #5 Aug 11 2014 22:45:55

%S 1,887,67311,3409361,191897041,11346946019,663248443295,

%T 38578051319991,2246283227163449,130862879072024301,

%U 7622964864814416035,444025298198899334745,25864000876540165953917,1506559074693480517741153

%N Number of 4Xn 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally, diagonally or antidiagonally

%C Row 4 of A232149

%H R. H. Hardin, <a href="/A232152/b232152.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A232152/a232152.txt">Empirical recurrence of order 58</a>

%F Empirical recurrence of order 58 (see link above)

%e Some solutions for n=3

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

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_, Nov 19 2013