The OEIS mourns the passing of
Jim Simons
and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A306839
Number of unimodular n X n matrices with elements {-1, 0, 1}.
0
2, 40, 6960, 10340736, 129599358720
(
list
;
graph
;
refs
;
listen
;
history
;
text
;
internal format
)
OFFSET
1,1
LINKS
Table of n, a(n) for n=1..5.
S. E. Thornton,
Properties of the Bohemian family of n x n matrices with population {-1, 0, 1}
, Characteristic Polynomial Database.
CROSSREFS
Sequence in context:
A328553
A162868
A059476
*
A297385
A261429
A062769
Adjacent sequences:
A306836
A306837
A306838
*
A306840
A306841
A306842
KEYWORD
nonn
,
more
,
hard
AUTHOR
Steven E. Thornton
, Mar 12 2019
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 13 05:16 EDT 2024. Contains 372498 sequences. (Running on oeis4.)