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A062218 Numbers k such that the smoothly undulating palindromic number (35*10^k - 53)/99 is a prime. 0
3, 5, 23, 2177, 3147, 4157, 22713, 28385 (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..8.

P. De Geest, SUPP Reference Table - 353

Index entries for sequences related to smoothly undulating palindromic primes

EXAMPLE

k=23 -> (35*10^23 - 53)/99 = 35353535353535353535353.

CROSSREFS

Cf. A062209-A062232, A059758, A032758.

Sequence in context: A137087 A214589 A309844 * A050280 A005761 A200948

Adjacent sequences:  A062215 A062216 A062217 * A062219 A062220 A062221

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 February 25 22:55 EST 2020. Contains 332270 sequences. (Running on oeis4.)