3-full (or cube-full, or cubefull) numbers: if a prime p divides n then so does p^3.

Terms

a(0) =1a(1) =8a(2) =16a(3) =27a(4) =32a(5) =64a(6) =81a(7) =125a(8) =128a(9) =216a(10) =243a(11) =256a(12) =343a(13) =432a(14) =512a(15) =625a(16) =648a(17) =729a(18) =864a(19) =1000a(20) =1024a(21) =1296a(22) =1331a(23) =1728a(24) =1944a(25) =2000a(26) =2048a(27) =2187a(28) =2197a(29) =2401