A222688 - OEIS

%I #4 Feb 28 2013 17:02:06

%S 8,237,7248,288829,12765040,589802909,27752564898,1319414370191,

%T 63167849881088,3040537134742112,146998128651407720,

%U 7133080659964442596,347227736612764543176,16948792785655500564103,829276538811229078591786

%N Number of nX6 0..2 arrays with exactly floor(nX6/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order

%C Column 6 of A222690

%H R. H. Hardin, <a href="/A222688/b222688.txt">Table of n, a(n) for n = 1..84</a>

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 28 2013