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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A221393 Number of 7Xn arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, with no 2-loops and with no occupancy greater than 2 0
0, 0, 364, 2420113, 2188482014, 2468313810280, 2142967506078650, 1939585877435608615, 1666732821075006620356, 1442175413154162238317806 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Row 7 of A221388

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=3

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A249671 A022196 A098252 * A099113 A073304 A011763

Adjacent sequences:  A221390 A221391 A221392 * A221394 A221395 A221396

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 14 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 April 26 04:11 EDT 2019. Contains 322469 sequences. (Running on oeis4.)