A202633 - OEIS

%I #5 Mar 31 2012 12:36:49

%S 36,2428,143028,8196796,464590190,26143599304,1464347535012,

%T 81766083532136,4555446633690226,253375514864780928,

%U 14074813726276067778,781057432128507731780,43308319465255378496036,2399781752411015808001612

%N Number of nX3 0..3 arrays with adjacent row and column sums unequal

%C Column 3 of A202636

%H R. H. Hardin, <a href="/A202633/b202633.txt">Table of n, a(n) for n = 1..18</a>

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Dec 21 2011