login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A113034 Beginning with 7, primes of the form: least multiple of the previous term followed by a 9. Beginning with 7, a(n) is the least prime of the form k*a(n-1)*10 +9. 1
7, 79, 3169, 31699, 1584959, 110947139, 8875771129, 88757711299, 30177621841669, 10260391426167469, 718227399831722839, 222650493947834080099, 122457771671308744054459, 9796621733704699524356729, 6563736561582148681319008439, 3019318818327788393406743881949 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
lm9[n_]:=Module[{k=1}, While[!PrimeQ[10*k*n+9], k++]; 10*k*n+9]; NestList[ lm9, 7, 15] (* Harvey P. Dale, Jan 16 2015 *)
CROSSREFS
Sequence in context: A098105 A201301 A159524 * A267798 A201704 A331424
KEYWORD
base,nonn
AUTHOR
Amarnath Murthy, Jan 03 2006
EXTENSIONS
More terms from Joshua Zucker, Jan 11 2006
Corrected by T. D. Noe and Don Reble, Nov 15 2006
More terms from Harvey P. Dale, Jan 16 2015
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 19 04:26 EDT 2024. Contains 370952 sequences. (Running on oeis4.)