a(n) is the smallest positive integer k such that, if kn is written in base 2, it requires exactly n ones.

A102032

a(n) is the smallest positive integer k such that, if kn is written in base 2, it requires exactly n ones.

Terms

    a(0) =1a(1) =3a(2) =7a(3) =15a(4) =11a(5) =21a(6) =89a(7) =255a(8) =167a(9) =307a(10) =349a(11) =1365a(12) =1259a(13) =6729a(14) =6417a(15) =65535a(16) =28431a(17) =29127a(18) =54757a(19) =209715a(20) =274627a(21) =750685a(22) =706649a(23) =5592405a(24) =2663383a(25) =9679163a(26) =14913005a(27) =186946121a(28) =37025579a(29) =353440017

External references