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!)
A197949 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 3,3,2,1,0,0,2 for x=0,1,2,3,4,5,6 0
1, 2, 8, 56, 580, 12366, 444569, 29249179, 3524964899, 767105714843 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Every 0 is next to 0 3's, every 1 is next to 1 3's, every 2 is next to 2 2's, every 3 is next to 3 1's, every 4 is next to 4 0's, every 5 is next to 5 0's, every 6 is next to 6 2's

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions with all values from 0 to 6 for 7X7X7

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

.......3.1............0.4............2.2............2.2............4.0

......1.2.2..........0.0.0..........2.6.2..........2.6.2..........0.0.4

.....0.2.6.2........0.0.0.0........0.2.2.1........0.2.2.0........0.5.0.0

....0.0.2.2.0......1.2.2.0.0......0.4.0.1.3......1.0.0.0.0......4.0.2.2.1

...0.5.4.0.0.4....3.2.6.2.5.0....2.0.5.0.2.1....3.2.2.5.0.0....0.0.2.6.2.3

..0.0.0.0.0.0.0..1.1.2.2.0.0.0..2.2.0.0.2.2.0..1.1.2.0.0.4.0..0.0.0.2.2.1.1

CROSSREFS

Sequence in context: A326009 A349562 A325290 * A243953 A005439 A128814

Adjacent sequences:  A197946 A197947 A197948 * A197950 A197951 A197952

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 19 2011

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 November 30 06:28 EST 2021. Contains 349419 sequences. (Running on oeis4.)