|
%I #4 Feb 20 2013 17:02:10
%S 0,2,2,17,27,194,467,2375,6320,31706,84949,426134,1133626,5776492,
%T 15176513,78547862,204559282,1071259196,2775207035,14655072445,
%U 37875592694,201114091282,519500141148,2768445005172,7154712147158
%N Number of nX3 0..1 arrays with exactly floor(nX3/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..1 order
%C Column 3 of A222456
%H R. H. Hardin, <a href="/A222451/b222451.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=4
%e ..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
%e ..0..0..0....0..1..1....0..0..1....0..0..0....1..1..1....0..0..0....0..0..0
%e ..0..0..0....1..1..1....0..1..1....1..1..1....1..1..1....0..0..0....0..0..1
%e ..1..1..1....1..1..1....1..1..1....1..1..1....1..1..1....1..0..1....1..1..1
%K nonn
%O 1,2
%A _R. H. Hardin_ Feb 20 2013
|
