a(n) = Sum_{(n - k)|n} k^2.

Terms

a(0) =0a(1) =0a(2) =1a(3) =4a(4) =13a(5) =16a(6) =50a(7) =36a(8) =101a(9) =100a(10) =170a(11) =100a(12) =402a(13) =144a(14) =362a(15) =440a(16) =629a(17) =256a(18) =995a(19) =324a(20) =1266a(21) =920a(22) =962a(23) =484a(24) =2578a(25) =976a(26) =1370a(27) =1576a(28) =2618a(29) =784