OFFSET
1,2
EXAMPLE
29 in binary is 11101. There are two substrings in this that are tied for longest palindromic substring, 111 and 101. Since 111 contains only 1's, then 29 is in this sequence.
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Leroy Quet, Oct 24 2009
EXTENSIONS
Extended by Ray Chandler, Mar 11 2010
STATUS
approved