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!)
A299608 Number of n X n 0..1 arrays with every element equal to 1, 2, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero. 0
0, 3, 15, 40, 179, 1223, 13490, 231838, 6506278, 335604816 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A299612.

LINKS

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

EXAMPLE

Some solutions for n=6

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

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

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

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

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

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

CROSSREFS

Cf. A299612.

Sequence in context: A298049 A298884 A298655 * A249835 A295938 A096742

Adjacent sequences:  A299605 A299606 A299607 * A299609 A299610 A299611

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 14 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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 24 21:49 EST 2022. Contains 350565 sequences. (Running on oeis4.)