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!)
A303089 Number of 7Xn 0..1 arrays with every element equal to 0, 2, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1
64, 21, 5472, 4182, 615471, 4862916, 266882021, 5924274499, 231312682374, 7326136324116, 265724475520255, 9228359438652216, 330920558831885611, 11758758712910364555, 421228402696480451106, 15057312628686341086187 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 7 of A303084.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..0..1. .0..0..0..0..0. .0..0..0..1..1. .0..0..0..0..1
..0..0..1..0..0. .1..0..0..0..0. .0..0..1..1..1. .0..0..0..0..1
..0..0..1..0..0. .1..0..1..0..1. .1..0..0..1..0. .1..0..1..0..0
..1..1..0..1..1. .0..0..0..0..0. .0..0..0..1..1. .0..0..0..0..0
..1..1..0..1..1. .0..0..0..0..0. .0..1..1..1..0. .1..1..0..1..1
..1..1..1..1..1. .1..1..1..1..1. .0..0..1..1..1. .0..1..1..1..0
..1..1..0..1..0. .0..1..1..1..1. .0..0..0..1..1. .0..1..1..1..0
CROSSREFS
Cf. A303084.
Sequence in context: A302465 A303247 A302373 * A302894 A303629 A302520
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 18 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 July 14 20:49 EDT 2024. Contains 374323 sequences. (Running on oeis4.)