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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A221138 Number of nX7 arrays of occupancy after each element moves to some horizontal or vertical neighbor, with no occupancy greater than 2 0
32, 57121, 58132316, 75512292025, 86907967843320, 106295637843093924 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A221139

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A159396 A221086 A054374 * A017009 A176030 A034245

Adjacent sequences:  A221135 A221136 A221137 * A221139 A221140 A221141

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 02 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 August 20 06:25 EDT 2019. Contains 326139 sequences. (Running on oeis4.)