Greetings from
The On-Line Encyclopedia of Integer Sequences
!
Hints
Search:
id:A114330
Displaying 1-1 of 1 results found.
page 1
Format:
long
| short |
internal
|
text
Sort: relevance |
references
|
number
Highlight: on |
off
A114330
Smallest semiprime S starting a chain of exactly n semiprimes from iterating f(S) = 2*S+1.
+0
1
6, 4, 38, 289, 145, 203, 2603, 31826, 1157, 3827, 621101, 1388153, 2681114, 2681669, 121360769, 969870257
(
list
;
graph
;
listen
)
page 1
Search completed in 0.001 seconds
Lookup
|
Welcome
|
Find friends
|
Music
|
Plot 2
|
Demos
|
Index
|
Browse
|
More
|
WebCam
Contribute new seq. or comment
|
Format
|
Transforms
|
Puzzles
|
Hot
|
Classics
More pages
|
Superseeker
|
Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 13 23:45 EST 2009. Contains 170824 sequences.
AT&T Labs Research
Legal Notice
© 2009 AT&T Intellectual Property.
All Rights Reserved.
