Numbers having a self-conjugate multiplicative partition into primes.

Terms

a(0) =1a(1) =4a(2) =18a(3) =27a(4) =200a(5) =300a(6) =1125a(7) =1568a(8) =2352a(9) =3125a(10) =8820a(11) =24500a(12) =27783a(13) =61952a(14) =77175a(15) =92928a(16) =346112a(17) =348480a(18) =420175a(19) =519168a(20) =823543a(21) =968000a(22) =1097712a(23) =1946880a(24) =3049200a(25) =5408000a(26) =6132672a(27) =8732691a(28) =9469952a(29) =14204928