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 A221809 T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, without move-in move-out straight through or left turns 9
 0, 1, 1, 0, 10, 0, 1, 34, 41, 1, 0, 214, 154, 233, 0, 1, 1016, 3906, 3426, 1156, 1, 0, 5429, 32636, 197048, 30716, 6048, 0, 1, 27535, 486331, 5873327, 6328365, 437374, 30973, 1, 0, 142858, 5202774, 239116581, 462706496, 247277805, 4798574, 159968, 0, 1 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,5 COMMENTS Table starts .0......1........0..........1...........0...........1.............0 .1.....10.......34........214........1016........5429.........27535 .0.....41......154.......3906.......32636......486331.......5202774 .1....233.....3426.....197048.....5873327...239116581....8354914378 .0...1156....30716....6328365...462706496.54679689449.5044723744009 .1...6048...437374..247277805.52282482444 .0..30973..4798574.8830682187 .1.159968.60643243 .0.823413 .1 LINKS R. H. Hardin, Table of n, a(n) for n = 1..60 EXAMPLE Some solutions for n=3 k=4 ..0..2..0..0....1..1..0..2....1..1..0..1....2..1..1..1....1..0..0..2 ..0..2..2..2....0..2..1..2....0..2..1..1....0..1..1..1....2..2..2..0 ..1..1..2..0....2..0..0..1....2..1..1..1....1..2..0..1....0..1..1..1 CROSSREFS Sequence in context: A261334 A038689 A030000 * A291451 A323836 A365893 Adjacent sequences: A221806 A221807 A221808 * A221810 A221811 A221812 KEYWORD nonn,tabl AUTHOR R. H. Hardin Jan 26 2013 STATUS approved

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Last modified September 29 16:58 EDT 2023. Contains 365773 sequences. (Running on oeis4.)