Palindromes formed from concatenation of A147759(n) and the same string A147759(n) but without its initial digit.
1, 111, 10101, 1001001, 101010101, 10110101101, 1010101010101
1 seqfan posts
Tue Feb 17 19:42:36 CET 2009 [seqfan] Re: Circular definitions.