A062222 Numbers k such that the smoothly undulating palindromic number (73*10^k - 37)/99 is a prime.

15, 39, 567, 2529, 14337

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..5.

Patrick De Geest, SUPP Reference Table - 737

Index entries for sequences related to smoothly undulating palindromic primes

Example

k=15 -> (73*10^15 - 37)/99 = 737373737373737.

Crossrefs

Cf. A062209-A062232, A059758, A032758.

Sequence in context: A259429 A126950 A091847 * A369720 A369758 A325659

Adjacent sequences: A062219 A062220 A062221 * A062223 A062224 A062225

Keyword

nonn,base,more

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