Numbers for which the number of their semiprime divisors sets a new record.

Terms

a(0) =4a(1) =12a(2) =30a(3) =60a(4) =180a(5) =210a(6) =420a(7) =1260a(8) =2310a(9) =4620a(10) =13860a(11) =30030a(12) =60060a(13) =180180a(14) =510510a(15) =1021020a(16) =3063060a(17) =9699690a(18) =19399380a(19) =58198140a(20) =223092870a(21) =446185740a(22) =1338557220a(23) =6469693230a(24) =12939386460a(25) =38818159380a(26) =194090796900a(27) =200560490130a(28) =401120980260