a(n) = (12*n + 2)^3.

Terms

a(0) =8a(1) =2744a(2) =17576a(3) =54872a(4) =125000a(5) =238328a(6) =405224a(7) =636056a(8) =941192a(9) =1331000a(10) =1815848a(11) =2406104a(12) =3112136a(13) =3944312a(14) =4913000a(15) =6028568a(16) =7301384a(17) =8741816a(18) =10360232a(19) =12167000a(20) =14172488a(21) =16387064a(22) =18821096a(23) =21484952a(24) =24389000a(25) =27543608a(26) =30959144a(27) =34645976a(28) =38614472a(29) =42875000