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!)
A069503 a(1) = 2; a(n) = smallest palindromic prime of the form k*a(n-1) + 1. 1
2, 3, 7, 757, 9927299, 359243616342953 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(1) = 2, a(n+1) = smallest palindromic prime == 1 (mod a(n)).

Multiplier k for a(7) is larger than 1000000000. - Patrick De Geest, Jun 10 2003

Multiplier k for a(7), if it exists, is larger than 10^10. - Daniel Starodubtsev, Jan 18 2020

LINKS

Table of n, a(n) for n=1..6.

CROSSREFS

Cf. A002385.

Sequence in context: A180162 A129907 A046284 * A077524 A238400 A266276

Adjacent sequences:  A069500 A069501 A069502 * A069504 A069505 A069506

KEYWORD

base,nonn,more,changed

AUTHOR

Amarnath Murthy, Mar 30 2002

EXTENSIONS

More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Mar 31 2003

a(6) from Patrick De Geest, Jun 10 2003

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 January 24 10:53 EST 2020. Contains 331193 sequences. (Running on oeis4.)