a(n) = Sum_{(n - k) does not divide n, 0 <= k < n} k^2.

Terms

a(0) =0a(1) =0a(2) =0a(3) =1a(4) =1a(5) =14a(6) =5a(7) =55a(8) =39a(9) =104a(10) =115a(11) =285a(12) =104a(13) =506a(14) =457a(15) =575a(16) =611a(17) =1240a(18) =790a(19) =1785a(20) =1204a(21) =1950a(22) =2349a(23) =3311a(24) =1746a(25) =3924a(26) =4155a(27) =4625a(28) =4312a(29) =6930