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!)
A267619 Number of 3 X n arrays containing n copies of 0..3-1 with every element equal to at least one horizontal or antidiagonal neighbor and the top left element equal to 0. 1
0, 2, 8, 42, 576, 5492, 68958, 814418, 9982880, 122186774, 1509756240, 18739734568, 233756282022, 2928054874344, 36812296612552, 464358008157458, 5874864170778700, 74526122250575078, 947703833383753558 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Row 3 of A267617.
LINKS
EXAMPLE
Some solutions for n=4
..0..0..2..0....0..0..2..2....0..0..1..1....0..0..2..2....0..0..0..0
..2..2..0..1....1..1..0..0....0..0..2..2....1..1..0..0....2..2..1..1
..2..1..1..1....1..1..2..2....1..1..2..2....2..2..1..1....2..2..1..1
CROSSREFS
Cf. A267617.
Sequence in context: A295199 A191479 A197935 * A012917 A050637 A349145
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 18 2016
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 15 18:49 EDT 2024. Contains 374333 sequences. (Running on oeis4.)