login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A175720
Duplicate of
A173605
.
1
1, 16, 240, 17293822569102704640
(
list
;
graph
;
refs
;
listen
;
history
;
text
;
internal format
)
OFFSET
1,2
LINKS
Table of n, a(n) for n=1..4.
FORMULA
A000005
(a(n)) = a(n-1) + 4 for n >= 2.
EXAMPLE
a(3) = 240 = the smallest number with 16 + 4 = 20 divisors.
CROSSREFS
Cf.
A014221
,
A173603
,
A175719
.
Sequence in context:
A005619
A204793
A173605
*
A342031
A135518
A369393
Adjacent sequences:
A175717
A175718
A175719
*
A175721
A175722
A175723
KEYWORD
dead
AUTHOR
Jaroslav Krizek
, Aug 15 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 August 22 23:56 EDT 2024. Contains 375369 sequences. (Running on oeis4.)