Numbers k such that sigma(k) - phi(k) is a cube.

Terms

a(0) =1a(1) =30a(2) =44a(3) =87a(4) =169a(5) =247a(6) =515a(7) =630a(8) =707a(9) =910a(10) =1067a(11) =1255a(12) =1356a(13) =1691a(14) =2128a(15) =2188a(16) =2291a(17) =2438a(18) =2574a(19) =2627a(20) =2747a(21) =2867a(22) =3668a(23) =3689a(24) =4063a(25) =4295a(26) =5206a(27) =5359a(28) =5999a(29) =6331