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!)
A298049 Number of n X n 0..1 arrays with every element equal to 1, 2, 4 or 6 king-move adjacent elements, with upper left element zero. 0
0, 3, 15, 40, 121, 512, 1708, 7014, 35804, 201703, 1158266, 7391098, 54852360 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Diagonal of A298055.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..1..0..0. .0..0..0..1..0. .0..0..0..1..0. .0..1..1..1..0
..1..1..0..1..1. .1..1..1..0..1. .1..1..1..0..0. .1..0..0..0..1
..0..1..1..1..0. .0..1..1..0..0. .0..0..0..0..0. .0..0..1..0..0
..0..1..0..1..0. .0..1..1..1..1. .0..1..0..1..0. .1..1..0..1..1
..1..0..1..0..1. .1..1..1..0..0. .1..1..0..1..1. .1..0..1..0..1
CROSSREFS
Cf. A298055.
Sequence in context: A183476 A297621 A014309 * A298884 A298655 A299608
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 11 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 June 10 13:58 EDT 2023. Contains 363205 sequences. (Running on oeis4.)