login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A233262 Number of 7Xn 0..5 arrays with no element x(i,j) adjacent to itself or value 5-x(i,j) horizontally or antidiagonally, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order (unlabelled 6-colorings with no clashing color pairs) 1
6896, 8390656, 24461443072, 71328837140480, 222290692443996160, 702177183940808278016, 2242238966451009797226496, 7190233079434838637629407232, 23116065100534863987420040265728 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A233256

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..209

R. H. Hardin, Empirical recurrence of order 28

FORMULA

Empirical recurrence of order 28 (see link above)

EXAMPLE

Some solutions for n=2

..0..1....0..1....0..1....0..1....0..1....0..1....0..1....0..1....0..1....0..1

..0..1....0..1....0..1....0..1....0..1....0..1....0..1....0..1....0..1....0..1

..0..2....0..2....0..1....0..2....0..1....0..1....0..2....0..2....0..2....0..2

..0..1....5..4....5..4....0..4....2..1....0..1....5..2....1..0....4..5....4..0

..0..4....0..4....0..2....2..4....2..0....2..5....1..5....1..3....4..3....1..2

..2..5....2..4....1..5....3..4....4..3....3..4....4..0....4..2....0..4....1..5

..4..0....2..1....3..4....5..2....0..3....0..3....3..4....1..0....5..1....1..2

CROSSREFS

Sequence in context: A184791 A184787 A233180 * A233245 A233223 A106768

Adjacent sequences:  A233259 A233260 A233261 * A233263 A233264 A233265

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 06 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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 23 08:40 EDT 2021. Contains 348211 sequences. (Running on oeis4.)