%I
%S 3,5,77,163,1479,3657,4573,8315,30259,31063,31855,36915,66657
%N Numbers k such that the smoothly undulating palindromic number(18*10^k  81)/99 is a prime.
%C Prime versus probable prime status and proofs are given in the author's table.
%C No further terms < 100000.  _Ray Chandler_, Aug 17 2011
%H P. De Geest, <a href="http://www.worldofnumbers.com/undulat.htm#supp181">SUPP Reference Table  181</a>
%H <a href="/index/Pri#pri_supp">Index entries for sequences related to smoothly undulating palindromic primes</a>
%e k=5 > (18*10^5  81)/99 = 18181.
%Y Cf. A062209A062232, A059758, A032758.
%K nonn,base
%O 1,1
%A _Patrick De Geest_ and Hans Rosenthal (Hans.Rosenthal(AT)tonline.de), Jun 15 2001
%E a(13)=66657 from _Ray Chandler_, Jan 31 2011
%E Edited by _Ray Chandler_, Aug 17 2011
