login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A348240
a(n) = Sum_{k = 1..floor(n/2)}
A003041
(n-2*k).
1
1, 2, 8, 26, 100
(
list
;
graph
;
refs
;
listen
;
history
;
text
;
internal format
)
OFFSET
1,2
LINKS
Table of n, a(n) for n=1..5.
H. Sharp, Jr.,
Enumeration of vacuously transitive relations
, Discrete Math. 4 (1973), 185-196.
CROSSREFS
Cf.
A003041
.
Sequence in context:
A129368
A357221
A281345
*
A128238
A110156
A295934
Adjacent sequences:
A348237
A348238
A348239
*
A348241
A348242
A348243
KEYWORD
nonn
,
more
AUTHOR
N. J. A. Sloane
, Oct 13 2021
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 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)