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!)
A300681 Number of nX7 0..1 arrays with every element equal to 0, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
1, 74, 131, 729, 6686, 54361, 494771, 4174087, 37464671, 329141039, 2923001082, 26034480835, 231283871073, 2056909000750, 18288923262193, 162634964488741, 1446254340101947, 12860864631967374, 114369341426371921 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 7 of A300682.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..1..1..0..0..1. .0..0..0..0..1..1..1. .0..0..0..0..0..0..0
..0..0..1..1..0..1..1. .0..1..0..1..0..0..1. .0..1..0..1..1..0..1
..1..0..0..0..1..0..0. .0..0..1..1..0..1..0. .1..1..0..1..0..1..1
..0..1..0..1..0..1..0. .0..1..0..1..0..1..1. .0..1..0..0..1..0..0
..0..0..1..1..0..0..0. .1..1..1..0..0..1..0. .1..1..1..1..1..0..1
CROSSREFS
Cf. A300682.
Sequence in context: A333100 A270340 A300379 * A309143 A365201 A044325
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 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 April 22 10:51 EDT 2024. Contains 371897 sequences. (Running on oeis4.)