Numbers with an even number of prime factors (counted with multiplicity) that can be factored into squarefree semiprimes (A320911) but cannot be factored into distinct semiprimes (A320892).
A320893
Numbers with an even number of prime factors (counted with multiplicity) that can be factored into squarefree semiprimes (A320911) but cannot be factored into distinct semiprimes (A320892).
Terms
- a(0) =1296a(1) =7776a(2) =10000a(3) =12960a(4) =18144a(5) =19440a(6) =21600a(7) =27216a(8) =28512a(9) =33696a(10) =36000a(11) =38416a(12) =42336a(13) =42768a(14) =44064a(15) =46656a(16) =48600a(17) =49248a(18) =50544a(19) =50625a(20) =59616a(21) =60000a(22) =66096a(23) =73872a(24) =75168a(25) =77760a(26) =80352a(27) =89424a(28) =95256a(29) =95904
External references
- oeis: A320893