login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A299009 Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 4, 5 or 6 king-move adjacent elements, with upper left element zero. 0
1, 7, 20, 174, 6908, 379236, 59666756, 22388413097, 20692923925827 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Diagonal of A299015.
LINKS
EXAMPLE
Some solutions for n=5
..0..1..0..1..0. .0..0..0..1..0. .0..1..1..0..0. .0..1..0..1..0
..1..1..0..1..0. .1..0..0..0..1. .1..1..1..1..1. .1..1..0..0..1
..0..0..0..0..1. .1..0..1..0..1. .0..0..0..1..0. .0..0..0..0..1
..1..1..0..0..0. .1..0..0..1..0. .1..0..0..0..1. .1..0..1..1..0
..0..1..0..1..1. .0..1..0..1..1. .1..0..1..1..0. .0..0..1..0..1
CROSSREFS
Cf. A299015.
Sequence in context: A299873 A009372 A051102 * A299800 A299676 A300308
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 31 2018
STATUS
approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 29 11:14 EDT 2024. Contains 371278 sequences. (Running on oeis4.)