Numbers that are a smallest number with k pairs of successive divisors, for some k.

Terms

a(0) =1a(1) =2a(2) =6a(3) =12a(4) =60a(5) =72a(6) =180a(7) =360a(8) =420a(9) =840a(10) =1260a(11) =2520a(12) =3780a(13) =5040a(14) =13860a(15) =27720a(16) =36960a(17) =41580a(18) =55440a(19) =83160a(20) =166320a(21) =277200a(22) =360360a(23) =471240a(24) =491400a(25) =720720a(26) =1081080a(27) =1113840a(28) =2162160a(29) =2827440