a(n) = (12n+4)^3.

Terms

a(0) =64a(1) =4096a(2) =21952a(3) =64000a(4) =140608a(5) =262144a(6) =438976a(7) =681472a(8) =1000000a(9) =1404928a(10) =1906624a(11) =2515456a(12) =3241792a(13) =4096000a(14) =5088448a(15) =6229504a(16) =7529536a(17) =8998912a(18) =10648000a(19) =12487168a(20) =14526784a(21) =16777216a(22) =19248832a(23) =21952000a(24) =24897088a(25) =28094464a(26) =31554496a(27) =35287552a(28) =39304000a(29) =43614208