%I #5 Dec 18 2015 18:18:46
%S 1,18,290,7770,382996,36275078,6564512068,2246994465516,
%T 1482101422338982,1881388287368571956
%N Number of n X n 0..3 arrays with every 0 next to a 1, every 1 next to a 2 and every 2 next to a 3 horizontally, vertically or antidiagonally, and no adjacent values equal
%C Diagonal of A232161
%e Some solutions for n=4
%e ..3..2..0..3....0..1..3..2....2..1..3..2....1..2..3..2....3..0..2..1
%e ..0..1..2..1....3..2..0..1....3..0..1..0....0..1..0..3....1..3..0..3
%e ..3..0..3..2....1..3..2..3....1..3..2..1....2..3..2..1....2..1..2..1
%e ..1..2..0..1....2..1..0..2....2..1..3..0....0..1..0..3....3..0..3..2
%K nonn
%O 1,2
%A _R. H. Hardin_, Nov 19 2013