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A221688 T(n,k)=Number of nXk arrays of occupancy after each element stays put or moves to some king-move neighbor, without consecutive moves in the same direction 1
1, 3, 3, 6, 35, 6, 13, 396, 396, 13, 28, 4429, 17480, 4429, 28, 60, 49387, 780692, 780692, 49387, 60, 129, 550264, 34704624, 140268025, 34704624, 550264, 129, 277, 6129659, 1542552756 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Table starts

...1......3........6........13.......28.........60.....129.277

...3.....35......396......4429....49387.....550264.6129659

...6....396....17480....780692.34704624.1542552756

..13...4429...780692.140268025

..28..49387.34704624

..60.550264

.129

LINKS

Table of n, a(n) for n=1..31.

EXAMPLE

Some solutions for n=3 k=4

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

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

..0..5..0..0....0..0..4..0....0..3..0..0....1..2..0..0....1..0..0..0

CROSSREFS

Column 1 is A002478

Sequence in context: A103895 A221886 A221925 * A066358 A261295 A118031

Adjacent sequences:  A221685 A221686 A221687 * A221689 A221690 A221691

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Jan 22 2013

STATUS

approved

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Last modified August 10 16:24 EDT 2022. Contains 356039 sequences. (Running on oeis4.)