Numbers with prime factorization p^3*q^3*r^4 where p, q, and r are distinct primes.

Terms

a(0) =54000a(1) =81000a(2) =135000a(3) =148176a(4) =222264a(5) =518616a(6) =574992a(7) =686000a(8) =862488a(9) =949104a(10) =1423656a(11) =1715000a(12) =2122416a(13) =2401000a(14) =2662000a(15) =2963088a(16) =3162456a(17) =3183624a(18) =3472875a(19) =4394000a(20) =4444632a(21) =5256144a(22) =5788125a(23) =6169176a(24) =6655000a(25) =7304528a(26) =7884216