login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A180372
1/9 the number of triangular nXnXn arrays of integers in 1..9 with no element or any of its neighbors having the same value
0
1, 56, 6720, 1290240, 392232960
(
list
;
graph
;
refs
;
listen
;
history
;
text
;
internal format
)
OFFSET
1,2
LINKS
Table of n, a(n) for n=1..5.
CROSSREFS
Sequence in context:
A278777
A202565
A213693
*
A255960
A201240
A329104
Adjacent sequences:
A180369
A180370
A180371
*
A180373
A180374
A180375
KEYWORD
nonn
AUTHOR
R. H. Hardin
Sep 01 2010
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 April 18 10:46 EDT 2024. Contains 371779 sequences. (Running on oeis4.)