A222328 - OEIS

%I #4 Feb 15 2013 06:52:37

%S 1,0,0,0,0,0,3,0,0,3,4,7,4,7,4,4,0,19,19,0,4,5,32,0,52,0,32,5,20,0,84,

%T 165,165,84,0,20,27,168,212,835,674,835,212,168,27,48,0,1366,3307,

%U 3770,3770,3307,1366,0,48,63,948,1302,14419,15100,38238,15100,14419,1302,948

%N T(n,k)=Number of nXk 0..1 arrays with exactly floor(nXk/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..1 order

%C Table starts

%C ...1....0......0.......3.........4...........4............5.............20

%C ...0....0......0.......7.........0..........32............0............168

%C ...0....0......4......19.........0..........84..........212...........1366

%C ...3....7.....19......52.......165.........835.........3307..........14419

%C ...4....0......0.....165.......674........3770........15100.........172590

%C ...4...32.....84.....835......3770.......38238.......255304........2542901

%C ...5....0....212....3307.....15100......255304......2284728.......37484794

%C ..20..168...1366...14419....172590.....2542901.....37484794......620488671

%C ..27....0...1302...66213....759758....20957580....318665044....10589084713

%C ..48..948..11152..302731...6657106...204487984...5848569858...186293287066

%C ..63....0..21206.1350601..30994294..1778907664..53774145449..3354992092851

%C .175.5279.132937.6283864.298933498.17205177010.993959061317.61359735913289

%H R. H. Hardin, <a href="/A222328/b222328.txt">Table of n, a(n) for n = 1..199</a>

%e Some solutions for n=4 k=4

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

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

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

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

%Y Column 1 is A222283

%K nonn,tabl

%O 1,7

%A _R. H. Hardin_ Feb 15 2013