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
!)
A110861
Number of even isodual (but not self-dual) binary codes of length 2n.
0
0, 0, 1, 3, 8, 20, 67, 331
(
list
;
graph
;
refs
;
listen
;
history
;
text
;
internal format
)
OFFSET
1,4
LINKS
Table of n, a(n) for n=1..8.
W. C. Huffman,
On the classification and enumeration of self-dual codes
, Finite Fields Applic., 11 (2005), 451-490.
CROSSREFS
Sequence in context:
A302674
A108189
A148768
*
A027320
A027319
A297973
Adjacent sequences:
A110858
A110859
A110860
*
A110862
A110863
A110864
KEYWORD
nonn
,
more
AUTHOR
N. J. A. Sloane
, Sep 19 2005
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 15 11:50 EDT 2024. Contains 372540 sequences. (Running on oeis4.)
