5-full numbers: if a prime p divides k then so does p^5.

Terms

a(0) =1a(1) =32a(2) =64a(3) =128a(4) =243a(5) =256a(6) =512a(7) =729a(8) =1024a(9) =2048a(10) =2187a(11) =3125a(12) =4096a(13) =6561a(14) =7776a(15) =8192a(16) =15552a(17) =15625a(18) =16384a(19) =16807a(20) =19683a(21) =23328a(22) =31104a(23) =32768a(24) =46656a(25) =59049a(26) =62208a(27) =65536a(28) =69984a(29) =78125