Numbers which have identical primes in n and d(n) but are not refactorable.

Terms

a(0) =486a(1) =768a(2) =8748a(3) =303750a(4) =354294a(5) =393216a(6) =480000a(7) =506250a(8) =984150a(9) =1179648a(10) =1228800a(11) =1417176a(12) =3906250a(13) =5467500a(14) =6635520a(15) =9841500a(16) =18750000a(17) =24504606a(18) =25312500a(19) =35156250a(20) =47829690a(21) =57177414a(22) =57395628a(23) =83886080a(24) =90354432a(25) =123018750a(26) =153600000a(27) =154140672a(28) =156243654a(29) =201326592