A062229 Numbers k such that the smoothly undulating palindromic number (94*10^k - 49)/99 is a prime.

5, 17, 65, 143, 551, 92981

Offset: 1

Author

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

Keywords

• nonn
• base
• more

Comments

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

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

Examples

			k=17 -> (94*10^17 - 49)/99 = 94949494949494949.
		

Links

• Patrick De Geest, SUPP Reference Table - 949
• Index entries for sequences related to smoothly undulating palindromic primes

Crossrefs

Cf. A062209-A062232, A059758, A032758.

Extensions

a(6) from Ray Chandler, Jul 29 2011

Edited by Ray Chandler, Aug 17 2011