The denominator of 2/n^3.

Terms

a(0) =1a(1) =1a(2) =4a(3) =27a(4) =32a(5) =125a(6) =108a(7) =343a(8) =256a(9) =729a(10) =500a(11) =1331a(12) =864a(13) =2197a(14) =1372a(15) =3375a(16) =2048a(17) =4913a(18) =2916a(19) =6859a(20) =4000a(21) =9261a(22) =5324a(23) =12167a(24) =6912a(25) =15625a(26) =8788a(27) =19683a(28) =10976a(29) =24389