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A062231 Smoothly undulating palindromic primes of the form (97*10^a(n)-79)/99. 1
9, 27, 45, 237 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Prime versus probable prime status and proofs are given in the author's table.

No further terms < 100000. - Ray Chandler, Aug 17 2011

LINKS

Table of n, a(n) for n=1..4.

P. De Geest, SUPP Reference Table - 979

Index entries for sequences related to smoothly undulating palindromic primes

EXAMPLE

a(n)=27 -> (97*10^27-79)/99 = 979797979797979797979797979.

CROSSREFS

Cf. A062209-A062232, A059758, A032758.

Sequence in context: A031088 A020156 A287661 * A133636 A020208 A020306

Adjacent sequences:  A062228 A062229 A062230 * A062232 A062233 A062234

KEYWORD

nonn,base

AUTHOR

Patrick De Geest and Hans Rosenthal (Hans.Rosenthal(AT)t-online.de), Jun 15 2001.

EXTENSIONS

Edited by Ray Chandler, Aug 17 2011

STATUS

approved

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Last modified September 23 21:16 EDT 2017. Contains 292391 sequences.