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A221898 T(n,k)=Number of nXk arrays of occupancy after each element stays put or moves to some horizontal, vertical or antidiagonal neighbor, without move-in move-out straight through or left turns 8
1, 3, 3, 6, 31, 6, 13, 258, 266, 13, 28, 2241, 7667, 2305, 28, 60, 19408, 236532, 235332, 19936, 60, 129, 167960, 7235107, 25821731, 7197649, 172624, 129, 277, 1453952, 221465158, 2815434576, 2814706089, 220361275, 1494152, 277, 595, 12585637 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Table starts

...1........3..........6...........13............28...........60............129

...3.......31........258.........2241.........19408.......167960........1453952

...6......266.......7667.......236532.......7235107....221465158.....6778558415

..13.....2305.....235332.....25821731....2815434576.307126807101.33499434763000

..28....19936....7197649...2814706089.1093046005330

..60...172624..220361275.307131177266

.129..1494152.6744533268

.277.12933821

.595

Row and column 2, and row and column 3, have different values but the same recurrences

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..49

EXAMPLE

Some solutions for n=3 k=4

..0..2..0..2....0..4..0..0....0..2..2..0....0..2..3..2....0..1..0..1

..2..1..0..0....1..1..1..1....1..3..1..0....0..0..0..0....2..1..0..4

..2..0..0..3....0..2..1..1....0..1..0..2....2..1..1..1....2..1..0..0

CROSSREFS

Column 1 and row 1 are A002478

Sequence in context: A230253 A259970 A221824 * A103895 A221886 A221925

Adjacent sequences:  A221895 A221896 A221897 * A221899 A221900 A221901

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Jan 30 2013

STATUS

approved

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Last modified September 30 11:58 EDT 2022. Contains 357105 sequences. (Running on oeis4.)