Numbers whose set of decimal digits coincides with the set of the indices of their prime factors.

Terms

a(0) =12a(1) =14a(2) =154a(3) =1196a(4) =14112a(5) =21888a(6) =53625a(7) =226512a(8) =279174a(9) =358435a(10) =821142a(11) =1222452a(12) =1665664a(13) =2228814a(14) =2454375a(15) =2614248a(16) =2872116a(17) =4425729a(18) =5751746a(19) =8653645a(20) =9551256a(21) =15261246a(22) =19427226a(23) =19644898a(24) =19775998a(25) =21271488a(26) =27676935a(27) =29591892a(28) =29956212a(29) =41878242