%I #2 Mar 30 2012 17:40:36
%S 0,16,17,41,43,41,76,274,76,468
%N a(n) is the least k such that 2^k contains a palindromic substring of length n.
%e a(6)=41 since the first palindromic substring of length 6
%e appears in 2^41=2199023(255552).
%Y Cf. A115943.
%K nonn,base
%O 1,2
%A _Giovanni Resta_, Feb 06 2006