%I A020754
%S A020754 1,3,7,47,241,843,22019,217069,1092746,8870023,221167421,
%T A020754 47255689914,82462576219,1043460553363,79180770078547
%N A020754 Increasing gaps between square-free numbers (lower end).
%e A020754 The first gap in A005117 occurs between 1 and 2 and has length 1. The 
               next largest gap occurs between 3 and 5 and has length 2. The next 
               largest gap is between 7 and 10 and has length 3. Etc. We are only 
               interested in gaps that set new records.
%Y A020754 Cf. A005117, A020753, A020755, A045882, A051681.
%Y A020754 Sequence in context: A074714 A064457 A005650 this_sequence A052381 A031440 
               A001566
%Y A020754 Adjacent sequences: A020751 A020752 A020753 this_sequence A020755 A020756 
               A020757
%K A020754 nonn,hard,nice
%O A020754 1,2
%A A020754 David W. Wilson (davidwwilson(AT)comcast.net)
%E A020754 Thanks to Christian Bower for additional comments.