Least integer of each prime signature A124832; also products of primorial numbers A002110.

Terms

a(0) =1a(1) =2a(2) =4a(3) =6a(4) =8a(5) =12a(6) =16a(7) =24a(8) =30a(9) =32a(10) =36a(11) =48a(12) =60a(13) =64a(14) =72a(15) =96a(16) =120a(17) =128a(18) =144a(19) =180a(20) =192a(21) =210a(22) =216a(23) =240a(24) =256a(25) =288a(26) =360a(27) =384a(28) =420a(29) =432