Cubes of the form semiprime(k) + k-th composite number.

Terms

a(0) =8a(1) =27a(2) =64a(3) =216a(4) =343a(5) =1000a(6) =24389a(7) =27000a(8) =35937a(9) =42875a(10) =46656a(11) =68921a(12) =74088a(13) =97336a(14) =148877a(15) =226981a(16) =373248a(17) =405224a(18) =456533a(19) =551368a(20) =681472a(21) =970299a(22) =1191016a(23) =1771561a(24) =1860867a(25) =2048383a(26) =2352637a(27) =3112136a(28) =3375000a(29) =4019679