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 A221817 T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, without move-in move-out straight through or left turns 7
 0, 1, 0, 0, 4, 0, 1, 16, 12, 0, 0, 91, 14, 40, 0, 1, 459, 1041, 379, 136, 0, 0, 2429, 7320, 29412, 1052, 460, 0, 1, 12678, 123644, 854959, 574706, 11079, 1556, 0, 0, 66380, 1271018, 35948127, 35993876, 13076919, 47390, 5264, 0, 1, 347305, 17049353 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,5 COMMENTS Table starts .0.....1......0.........1..........0..........1..........0...........1 .0.....4.....16........91........459.......2429......12678.......66380 .0....12.....14......1041.......7320.....123644....1271018....17049353 .0....40....379.....29412.....854959...35948127.1290833232.49447514716 .0...136...1052....574706...35993876.4744100774 .0...460..11079..13076919.2428955613 .0..1556..47390.280280821 .0..5264.361950 .0.17808 .0 LINKS R. H. Hardin, Table of n, a(n) for n = 1..59 EXAMPLE Some solutions for n=3 k=4 ..0..1..1..2....1..0..0..1....0..1..0..1....1..1..0..1....0..1..2..1 ..2..2..2..0....0..2..2..1....2..1..2..2....1..2..2..1....0..2..2..0 ..1..1..0..0....1..2..2..0....1..1..1..0....1..1..1..0....1..1..1..1 CROSSREFS Column 2 is A221652 Sequence in context: A335748 A266488 A189355 * A054375 A195739 A323128 Adjacent sequences: A221814 A221815 A221816 * A221818 A221819 A221820 KEYWORD nonn,tabl AUTHOR R. H. Hardin Jan 26 2013 STATUS approved

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Last modified June 6 20:05 EDT 2023. Contains 363151 sequences. (Running on oeis4.)