Sum of the cubes of the first n noncubefree numbers.

Terms

a(0) =0a(1) =512a(2) =4608a(3) =18432a(4) =38115a(5) =70883a(6) =134883a(7) =245475a(8) =402939a(9) =578555a(10) =840699a(11) =1213947a(12) =1725947a(13) =2257388a(14) =2938860a(15) =3823596a(16) =4948460a(17) =6208172a(18) =7613100a(19) =9341100a(20) =11294225a(21) =13391377a(22) =15851752a(23) =18367208a(24) =21353192a(25) =24865000a(26) =28961000