a(n) = A077118(n) - n^3.

Terms

a(0) =0a(1) =0a(2) =1a(3) =-2a(4) =0a(5) =-4a(6) =9a(7) =18a(8) =17a(9) =0a(10) =24a(11) =-35a(12) =36a(13) =12a(14) =-40a(15) =-11a(16) =0a(17) =-13a(18) =-56a(19) =30a(20) =-79a(21) =-45a(22) =-39a(23) =-67a(24) =100a(25) =0a(26) =113a(27) =-83a(28) =-48a(29) =-53