n^3+Largest square, (Largest square <= n^3).

Terms

a(0) =0a(1) =2a(2) =12a(3) =52a(4) =128a(5) =246a(6) =412a(7) =667a(8) =996a(9) =1458a(10) =1961a(11) =2627a(12) =3409a(13) =4313a(14) =5448a(15) =6739a(16) =8192a(17) =9813a(18) =11608a(19) =13583a(20) =15921a(21) =18477a(22) =21257a(23) =24267a(24) =27513a(25) =31250a(26) =35000a(27) =39283a(28) =43856a(29) =48725