Maximum value of k^2 * (n-k).

Terms

a(0) =0a(1) =0a(2) =1a(3) =4a(4) =9a(5) =18a(6) =32a(7) =50a(8) =75a(9) =108a(10) =147a(11) =196a(12) =256a(13) =324a(14) =405a(15) =500a(16) =605a(17) =726a(18) =864a(19) =1014a(20) =1183a(21) =1372a(22) =1575a(23) =1800a(24) =2048a(25) =2312a(26) =2601a(27) =2916a(28) =3249a(29) =3610