A222474 - OEIS

%I #4 Feb 21 2013 13:52:27

%S 1,1,5,42,45,1582,2953,104833,179105,6910335,12297363,463356818,

%T 842066129,31086653839,57898183793,2088249634569,3984107937241,

%U 140397984424512,274405097987979,9447509884713957,18914117934834161

%N Number of nX3 0..3 arrays with no more than floor(nX3/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..3 order

%C Column 3 of A222479

%H R. H. Hardin, <a href="/A222474/b222474.txt">Table of n, a(n) for n = 1..208</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,3

%A _R. H. Hardin_ Feb 21 2013