Binary representations of n and n^2 have no common 3-digit substring.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =5a(5) =6a(6) =7a(7) =11a(8) =23a(9) =46a(10) =85a(11) =341a(12) =1471a(13) =2942a(14) =5461a(15) =21845a(16) =349525a(17) =1398101a(18) =6025215a(19) =12050430a(20) =22369621a(21) =89478485a(22) =1431655765a(23) =5726623061a(24) =91625968981a(25) =366503875925