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!)
A297378 Number of 5Xn 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 0, 1 or 2 neighboring 1s. 1
32, 1024, 18805, 418344, 9554038, 211988289, 4729833008, 105725571407, 2361080672512, 52730481660799, 1177723977872649, 26303765809635352, 587477573175558513, 13120952265924292911, 293048421339427531303 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 5 of A297374.
LINKS
FORMULA
Empirical recurrence of order 84 (see link above)
EXAMPLE
Some solutions for n=5
..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0
..0..0..0..1..0. .0..0..0..0..0. .0..0..0..1..1. .0..1..0..1..0
..0..0..0..1..0. .0..1..0..0..1. .0..0..0..1..0. .0..1..0..1..0
..0..1..1..0..1. .0..1..0..0..0. .1..0..1..1..0. .1..0..1..0..0
..0..0..0..1..0. .1..1..1..0..0. .0..0..0..1..0. .0..0..0..0..1
CROSSREFS
Cf. A297374.
Sequence in context: A188906 A189107 A181216 * A283861 A223566 A227593
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 29 2017
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 18 03:33 EDT 2024. Contains 371767 sequences. (Running on oeis4.)