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!)
A217231 Number of triangular nXnXn arrays of occupancy after each element moves to some neighbor but without 2-loops and with no occupancy greater than 5. 0
0, 1, 47, 5227, 2001776, 2840672270, 15140206096832 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Column 5 of A217232.

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

Some solutions for n=4

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

....1.3......1.0......2.0......1.0......1.0......3.0......1.1......1.1

...1.1.2....2.3.1....2.2.3....1.5.0....2.2.1....1.2.2....1.1.2....2.1.2

..1.0.0.1..0.0.3.0..1.0.0.0..1.1.1.0..0.2.0.1..1.0.1.0..0.2.2.0..0.1.1.1

CROSSREFS

Sequence in context: A194617 A217229 A217230 * A141797 A101629 A267063

Adjacent sequences:  A217228 A217229 A217230 * A217232 A217233 A217234

KEYWORD

nonn,hard,more

AUTHOR

R. H. Hardin, Sep 28 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 May 25 21:44 EDT 2022. Contains 354071 sequences. (Running on oeis4.)