A083835 - OEIS

%I #8 Aug 23 2014 13:39:07

%S 1,9,99,121,131,999,9999,12021,12121,13031,13131,99999,999999,1202021,

%T 1203021,1212121,1213121,1302031,1303031,1312131,1313131,9999999,

%U 99999999,120202021,120212021,120303021,120313021,121202121,121212121

%N Palindromes n such that 6n + 1 is also a palindrome.

%Y Cf. A083829, A083830, A083832, A083834, A083836.

%K base,nonn

%O 1,2

%A _Amarnath Murthy_ and Meenakshi Srikanth (menakan_s(AT)yahoo.com), May 09 2003

%E Corrected and extended by _Ray Chandler_, May 21 2003