login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A298495 Number of n X n 0..1 arrays with every element equal to 0, 1, 3, 4 or 7 king-move adjacent elements, with upper left element zero. 0
1, 4, 1, 38, 281, 277, 24272, 1377101, 10659243, 4599990391 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A298501.

LINKS

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

EXAMPLE

Some solutions for n=6

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

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

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

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

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

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

CROSSREFS

Cf. A298501.

Sequence in context: A169656 A303987 A297900 * A193962 A302441 A269906

Adjacent sequences:  A298492 A298493 A298494 * A298496 A298497 A298498

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 20 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 October 27 01:02 EDT 2020. Contains 338035 sequences. (Running on oeis4.)