OFFSET
0,1
COMMENTS
A (7/3)+ power is a word of the form xxx', where x' is a prefix of x and |x'| > |x|/3. Every odd length (2n+1) is guaranteed to have at least one such palindrome.
EXAMPLE
For n = 6 the 4 palindromes avoiding (7/3)+ powers are {0011001001100, 0100110110010, 1011001001101, 1100110110011}.
CROSSREFS
KEYWORD
nonn
AUTHOR
Jeffrey Shallit, Dec 15 2016
STATUS
approved