login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons 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 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A265661 Number of nX3 arrays containing 3 copies of 0..n-1 with no element plus any horizontal or vertical neighbor equal to n-1. 0
0, 0, 4, 1608, 951040, 586218384, 1092575917680, 1790692038513408 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Column 3 of A265663.

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=4

..3..2..0....3..2..3....3..1..3....0..1..3....2..0..2....1..3..3....1..3..2

..1..3..1....1..0..2....2..0..2....1..3..1....0..2..3....3..1..1....0..2..3

..0..1..0....1..1..3....2..0..0....0..2..3....1..0..1....2..0..0....2..0..1

..2..3..2....0..0..2....3..1..1....2..0..2....3..1..3....0..2..2....0..1..3

CROSSREFS

Cf. A265663.

Sequence in context: A030253 A278549 A229664 * A280793 A160225 A316484

Adjacent sequences:  A265658 A265659 A265660 * A265662 A265663 A265664

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 12 2015

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 December 4 15:36 EST 2021. Contains 349526 sequences. (Running on oeis4.)