login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A221609 T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without move-in move-out left turns 13
0, 1, 0, 2, 2, 0, 4, 10, 4, 0, 8, 53, 54, 8, 0, 16, 269, 811, 287, 16, 0, 32, 1378, 11344, 12270, 1522, 32, 0, 64, 7057, 160999, 472974, 184193, 8072, 64, 0, 128, 36152, 2286878, 18561474, 19521328, 2764070, 42810, 128, 0, 256, 185192, 32522604 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

Table starts

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

.0....2.......10...........53............269.............1378..............7057

.0....4.......54..........811..........11344...........160999...........2286878

.0....8......287........12270.........472974.........18561474.........730077217

.0...16.....1522.......184193.......19521328.......2114436826......229719706276

.0...32.....8072......2764070......804371949.....240257613761....72063803799931

.0...64....42810.....41480899....33145684280...27294219603383.22596355738886108

.0..128...227042....622510123..1365843685939.3100806305382481

.0..256..1204112...9342086217.56282519118170

.0..512..6385980.140197824897

.0.1024.33867896

.0.2048

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..95

EXAMPLE

Some solutions for n=3 k=4

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

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

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

CROSSREFS

Sequence in context: A099087 A009545 A084102 * A160125 A151868 A052079

Adjacent sequences:  A221606 A221607 A221608 * A221610 A221611 A221612

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Jan 20 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 November 19 08:44 EST 2019. Contains 329318 sequences. (Running on oeis4.)