%I A057612
%S A057612 3,7,31,127,8191,131071,524287,8388607
%N A057612 Numbers that are both Mersenne numbers (A001348) and lucky numbers (A000959).
%Y A057612 Cf. A000959, A001348.
%Y A057612 Sequence in context: A006515 A093535 A081093 this_sequence A136005 A088552 
               A000668
%Y A057612 Adjacent sequences: A057609 A057610 A057611 this_sequence A057613 A057614 
               A057615
%K A057612 nonn
%O A057612 1,1
%A A057612 Naohiro Nomoto (6284968128(AT)geocities.co.jp), Oct 09 2000
%E A057612 More terms from Mark Weston (mweston(AT)uvic.ca), Oct 10 2001