login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A208363 "3-ply" palindromic primes. 2
10000500001, 10000900001, 10001610001, 10002220001, 10002520001, 10003630001, 10006560001, 10008180001, 10009290001, 10013031001, 10013131001, 10014741001, 10016961001, 10021512001 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

From the Ribenboim book: palindromic primes whose length is a palindromic prime whose length is a palindromic prime whose length is NOT a palindromic prime.

REFERENCES

Paulo Ribenboim, The New Book of Prime Number Records, Springer-Verlag New York Inc., 1996, pages 160-161.

LINKS

Alvin Hoover Belt, Table of n, a(n) for n = 1..100

EXAMPLE

a(42042) = 99999199999, a(42043) = 10^100 + 3030*10^48 + 1. [Charles R Greathouse IV, Feb 26 2012]

CROSSREFS

Cf. A002385, A208362 (number of digits of these numbers).

Sequence in context: A017650 A244450 A293791 * A261458 A296158 A172688

Adjacent sequences:  A208360 A208361 A208362 * A208364 A208365 A208366

KEYWORD

nonn,base

AUTHOR

Alvin Hoover Belt, Feb 25 2012

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 14 19:53 EDT 2021. Contains 343903 sequences. (Running on oeis4.)