login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A347569
Number of ways 1/n can be expressed as the sum of six distinct unit fractions: 1/n = 1/p + 1/q + 1/r + 1/s + 1/t + 1/u, with 0 < p < q < r < s < t < u.
3
2320, 244817, 3421052, 18420699, 64025680, 131223239, 431008820, 681922142
(
list
;
graph
;
refs
;
listen
;
history
;
text
;
internal format
)
OFFSET
1,1
LINKS
Table of n, a(n) for n=1..8.
CROSSREFS
Cf.
A002966
,
A073546
,
A227610
,
A241883
,
A347566
.
Sequence in context:
A210175
A137733
A205636
*
A250998
A119735
A115933
Adjacent sequences:
A347566
A347567
A347568
*
A347570
A347571
A347572
KEYWORD
nonn
,
hard
,
more
AUTHOR
Jud McCranie
, Sep 06 2021
EXTENSIONS
a(7) and a(8) from
Jud McCranie
, Oct 15 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 March 29 03:51 EDT 2024. Contains 371264 sequences. (Running on oeis4.)