Numbers k such that Sum_{d|k} d/core(d) > 2*k, where core(d) is the squarefree part of d.

Terms

a(0) =576a(1) =1296a(2) =2304a(3) =3600a(4) =5184a(5) =7056a(6) =8100a(7) =9216a(8) =11664a(9) =14400a(10) =17424a(11) =20736a(12) =24336a(13) =28224a(14) =32400a(15) =36864a(16) =44100a(17) =46656a(18) =57600a(19) =63504a(20) =69696a(21) =72900a(22) =82944a(23) =90000a(24) =97344a(25) =104976a(26) =108900a(27) =112896a(28) =129600a(29) =147456