Sum of all cubefree numbers with the same squarefree kernel as the n-th squarefree number.

Terms

a(0) =1a(1) =6a(2) =12a(3) =30a(4) =72a(5) =56a(6) =180a(7) =132a(8) =182a(9) =336a(10) =360a(11) =306a(12) =380a(13) =672a(14) =792a(15) =552a(16) =1092a(17) =870a(18) =2160a(19) =992a(20) =1584a(21) =1836a(22) =1680a(23) =1406a(24) =2280a(25) =2184a(26) =1722a(27) =4032a(28) =1892a(29) =3312