A232369 - OEIS

%I #5 Dec 18 2015 18:18:47

%S 1,14,586,63744,27133338,47301712998,319646954776850,

%T 8418146420087467712,876192348419528567402450

%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, diagonally or antidiagonally, and no adjacent values equal

%C Diagonal of A232376

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_, Nov 23 2013