A062212 Numbers k such that the smoothly undulating palindromic number (16*10^k - 61)/99 is a prime.

7, 55, 109, 145, 229, 961

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..6.

P. De Geest, SUPP Reference Table - 161

Index entries for sequences related to smoothly undulating palindromic primes

Example

k=7 -> (16*10^7 - 61)/99 = 1616161.

Crossrefs

Cf. A062209-A062232, A059758, A032758.

Sequence in context: A043077 A192718 A014637 * A272864 A121183 A291891

Adjacent sequences: A062209 A062210 A062211 * A062213 A062214 A062215

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