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A221551 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 left turns 7
0, 1, 1, 2, 10, 2, 4, 72, 71, 4, 8, 503, 1930, 494, 8, 16, 3517, 48018, 47976, 3448, 16, 32, 24546, 1200093, 4107189, 1196232, 24055, 32, 64, 171268, 29961271, 354947070, 354544219, 29856238, 167811, 64, 128, 1194876, 747830157, 30632388919 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

Table starts

...0.......1.........2...........4............8..........16............32

...1......10........72.........503.........3517.......24546........171268

...2......71......1930.......48018......1200093....29961271.....747830157

...4.....494.....47976.....4107189....354947070.30632388919.2643033185667

...8....3448...1196232...354544219.106036544373

..16...24055..29856238.30591390580

..32..167811.745144793

..64.1170709

.128

LINKS

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

EXAMPLE

Some solutions for n=3 k=4

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

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

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

CROSSREFS

Sequence in context: A215749 A102775 A154032 * A010700 A121521 A280033

Adjacent sequences:  A221548 A221549 A221550 * A221552 A221553 A221554

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Jan 19 2013

STATUS

approved

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Last modified October 18 23:44 EDT 2021. Contains 348071 sequences. (Running on oeis4.)