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!)
A081938 a(1) = 1, a(n) = smallest palindromic number > a(n-1) of the form k*a(n-1) - 1. 1
1, 2, 3, 5, 9, 44, 131, 602206, 39293339293, 98576836066063867589 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
MATHEMATICA
nxt[n_]:=Module[{k=2}, While[!PalindromeQ[k*n-1], k++]; k*n-1]; Join[{1}, NestList[ nxt, 2, 8]] (* Harvey P. Dale, Oct 05 2018 *)
CROSSREFS
Cf. A081939.
Sequence in context: A276410 A003432 A179332 * A129500 A250745 A109204
KEYWORD
base,more,nonn
AUTHOR
Amarnath Murthy, Apr 02 2003
EXTENSIONS
a(8) and a(9) from R. J. Mathar, Jul 15 2007
a(10) from Donovan Johnson, Mar 26 2011
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 3 10:09 EST 2024. Contains 370510 sequences. (Running on oeis4.)