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A221125 T(n,k)=Number of nXk arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor 9

%I #4 Jan 02 2013 12:38:21

%S 1,3,1,8,21,1,21,200,144,1,55,1950,4872,987,1,144,19005,179300,118472,

%T 6765,1,377,185164,6405243,16436223,2880520,46368,1,987,1803949,

%U 229006550,2152770692,1506094707,70036168,317811,1,2584,17574675

%N T(n,k)=Number of nXk arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor

%C Table starts

%C .1........3...........8.............21..............55.............144

%C .1.......21.........200...........1950...........19005..........185164

%C .1......144........4872.........179300.........6405243.......229006550

%C .1......987......118472.......16436223......2152770692....282454178707

%C .1.....6765.....2880520.....1506094707....723234356389.348270153038959

%C .1....46368....70036168...138001217828.242959402596630

%C .1...317811..1702839048.12644783009532

%C .1..2178309.41402332360

%C .1.14930352

%C .1

%H R. H. Hardin, <a href="/A221125/b221125.txt">Table of n, a(n) for n = 1..59</a>

%e Some solutions for n=3 k=4

%e ..1..1..2..0....2..1..1..0....2..0..2..0....2..1..1..0....1..2..0..0

%e ..0..2..2..0....0..1..2..1....1..1..1..1....0..1..2..0....0..2..2..0

%e ..1..1..0..2....0..0..2..2....0..3..1..0....0..2..3..0....0..1..4..0

%Y Column 2 is A033888

%Y Row 1 is A001906

%K nonn,tabl

%O 1,2

%A _R. H. Hardin_ Jan 02 2013

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Last modified May 7 16:48 EDT 2024. Contains 372310 sequences. (Running on oeis4.)