OFFSET
0,4
COMMENTS
The "if it begins with 0 complement it" clause is required because nonzero terms in the OEIS may not begin with 0.
LINKS
Lars Blomberg, Table of n, a(n) for n = 0..9999
EXAMPLE
n=10 = 1010, longest palindromic factor is 101.
n=12 = 1100, there are two palindromic factors of length 2, namely 11 and 00, and we choose the larger, 11.
n=24 = 11000, longest palindromic factor is 000, complementing gives 111.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
N. J. A. Sloane, Aug 15 2012
EXTENSIONS
More terms from Lars Blomberg, Jun 29 2014
STATUS
approved