login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A221809 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 straight through or left turns 9
0, 1, 1, 0, 10, 0, 1, 34, 41, 1, 0, 214, 154, 233, 0, 1, 1016, 3906, 3426, 1156, 1, 0, 5429, 32636, 197048, 30716, 6048, 0, 1, 27535, 486331, 5873327, 6328365, 437374, 30973, 1, 0, 142858, 5202774, 239116581, 462706496, 247277805, 4798574, 159968, 0, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,5

COMMENTS

Table starts

.0......1........0..........1...........0...........1.............0

.1.....10.......34........214........1016........5429.........27535

.0.....41......154.......3906.......32636......486331.......5202774

.1....233.....3426.....197048.....5873327...239116581....8354914378

.0...1156....30716....6328365...462706496.54679689449.5044723744009

.1...6048...437374..247277805.52282482444

.0..30973..4798574.8830682187

.1.159968.60643243

.0.823413

.1

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..60

EXAMPLE

Some solutions for n=3 k=4

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

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

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

CROSSREFS

Sequence in context: A261334 A038689 A030000 * A291451 A323836 A062520

Adjacent sequences:  A221806 A221807 A221808 * A221810 A221811 A221812

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Jan 26 2013

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 12 06:48 EDT 2020. Contains 335657 sequences. (Running on oeis4.)