login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 60th year, we have over 367,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A233017 Number of nX7 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally or vertically, top left element zero, and 1 appearing before 2 in row major order 1
365, 176474, 85827722, 41775098873, 20336458202315, 9900284810558324, 4819736584585663322, 2346387082638325434623, 1142289504742332894080090, 556099819337132688338013569, 270725603659451277161400600662 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A233018
LINKS
FORMULA
Empirical recurrence of order 33 (see link above)
EXAMPLE
Some solutions for n=2
..0..0..0..1..0..2..2....0..0..1..1..1..0..2....0..0..1..1..3..2..2
..2..0..1..0..0..0..0....1..0..1..0..1..0..2....2..0..1..3..2..2..3
CROSSREFS
Sequence in context: A241376 A208566 A209099 * A233081 A209106 A208257
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 03 2013
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 December 4 13:46 EST 2023. Contains 367563 sequences. (Running on oeis4.)