login
This site is supported by donations to The OEIS Foundation.

 

Logo

The OEIS is looking to hire part-time people to help edit core sequences, upload scanned documents, process citations, fix broken links, etc. - Neil Sloane, njasloane@gmail.com

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A030522 Product of first n palindromic primes minus 1. 1
1, 5, 29, 209, 2309, 233309, 30563609, 4615105109, 835334024909, 159548798757809, 49938774011194529, 17628387225951669089, 6575388435279972570569, 2518373770712229494528309 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

The subsequence which are themselves primes begins: 5, 29, 2309, 4615105109, 2518373770712229494528309. - Jonathan Vos Post, Feb 09 2011

LINKS

Table of n, a(n) for n=1..14.

MATHEMATICA

palQ[n_]:=Module[{idn=IntegerDigits[n]}, idn==Reverse[idn]]; #-1&/@Rest[ FoldList[ Times, 1, Select[Prime[Range[200]], palQ]]] (* Harvey P. Dale, Jun 21 2011 *)

CROSSREFS

Cf. A019515, A030521.

Sequence in context: A105277 A103213 A057588 * A091124 A121143 A027048

Adjacent sequences:  A030519 A030520 A030521 * A030523 A030524 A030525

KEYWORD

nonn,base

AUTHOR

Felice Russo

EXTENSIONS

Corrected and extended by Larry Reeves (larryr(AT)acm.org), Sep 25 2000

Corrected by D. S. McNeil, Aug 20 2010

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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified May 29 01:07 EDT 2017. Contains 287241 sequences.