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 A222608 T(n,k)=Number of nXk 0..3 arrays with exactly floor(nXk/2) elements equal to at least one king-move neighbor, with new values introduced in row major 0..3 order 5
 1, 0, 0, 0, 6, 0, 6, 32, 32, 6, 20, 520, 892, 520, 20, 20, 4556, 42492, 42492, 4556, 20, 70, 57072, 779875, 3584673, 779875, 57072, 70, 685, 594544, 41383224, 298478633, 298478633, 41383224, 594544, 685, 2808, 6958016, 735555885, 24650010932 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,5 COMMENTS Table starts ....1........0...........0.............6.............20.............20 ....0........6..........32...........520...........4556..........57072 ....0.......32.........892.........42492.........779875.......41383224 ....6......520.......42492.......3584673......298478633....24650010932 ...20.....4556......779875.....298478633....34850410918.14279931628806 ...20....57072....41383224...24650010932.14279931628806 ...70...594544...735555885.2035465167670 ..685..6958016.40786547448 .2808.77112256 .5370 LINKS R. H. Hardin, Table of n, a(n) for n = 1..59 EXAMPLE Some solutions for n=3 k=4 ..0..1..2..1....0..1..2..0....0..1..0..1....0..1..1..2....0..1..2..1 ..0..0..0..3....1..2..1..1....2..2..3..0....3..2..0..1....3..1..3..2 ..1..2..1..1....0..3..0..3....3..0..0..1....1..3..1..3....2..0..0..1 CROSSREFS Sequence in context: A223104 A222722 A222747 * A021900 A273413 A341906 Adjacent sequences:  A222605 A222606 A222607 * A222609 A222610 A222611 KEYWORD nonn,tabl AUTHOR R. H. Hardin Feb 26 2013 STATUS approved

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Last modified September 20 20:15 EDT 2021. Contains 347590 sequences. (Running on oeis4.)