References to A153500

First 3 terms coincide with A152756. For n>3, a(n) is the palindromic number formed from concatenation of 1, 0, A147759(n-3), 0, A147759(n-3), 0 and 1.
1, 101, 10001, 1010101, 101101101, 10101010101, 1010010100101

1 seqfan posts