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!)
A203844 Number of nX6 0..3 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors 1
1, 810, 362648, 83049596, 19914461784, 5191761888989, 1343321735549790, 345412651608406381, 89264849660965978156, 23113820838413136068578, 5981531421021641392319948, 1547617761143017432765908639 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 6 of A203846
LINKS
EXAMPLE
Some solutions for n=4
..1..3..3..0..3..3....0..2..2..3..3..0....0..3..3..1..2..2....1..1..2..2..2..0
..2..3..3..1..3..3....0..2..3..3..3..1....0..3..3..3..2..2....3..3..2..0..2..0
..3..3..1..0..3..2....3..3..3..0..0..1....0..0..3..3..0..1....3..3..1..2..2..0
..3..3..3..3..3..2....3..3..1..1..1..1....0..0..1..1..1..1....3..3..0..2..2..0
CROSSREFS
Sequence in context: A346716 A156404 A282376 * A068278 A208189 A183216
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 06 2012
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 February 23 14:24 EST 2024. Contains 370283 sequences. (Running on oeis4.)