The smallest number k whose divisors include exactly n Duffinian numbers (A003624).

Terms

a(0) =1a(1) =4a(2) =8a(3) =16a(4) =32a(5) =64a(6) =128a(7) =256a(8) =512a(9) =576a(10) =1152a(11) =1600a(12) =2304a(13) =4608a(14) =3600a(15) =6300a(16) =7200a(17) =18900a(18) =20736a(19) =32725a(20) =14400a(21) =28800a(22) =50400a(23) =56700a(24) =108900a(25) =57600a(26) =100800a(27) =111321a(28) =176400a(29) =129600