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!)
A300429 Number of n X n 0..1 arrays with every element equal to 1, 2 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 0
0, 2, 13, 87, 704, 6677, 75553, 1012416, 16998387, 349644776, 9034633150 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Diagonal of A300435.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..1..0..1. .0..0..1..0..0. .0..0..1..0..1. .0..0..0..1..1
..0..1..0..1..0. .0..1..1..1..1. .1..0..1..0..1. .0..0..1..0..0
..1..0..1..0..0. .1..1..0..0..0. .1..0..1..0..0. .0..1..0..1..0
..1..0..1..1..1. .0..1..1..1..1. .1..0..1..1..0. .1..0..1..0..1
..1..0..0..0..1. .0..0..0..0..0. .1..0..0..1..1. .1..0..0..1..1
CROSSREFS
Cf. A300435.
Sequence in context: A091116 A091099 A092849 * A106938 A106937 A033891
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 05 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 28 14:38 EDT 2024. Contains 371254 sequences. (Running on oeis4.)