Smallest number with 2n divisors.

Terms

a(0) =2a(1) =6a(2) =12a(3) =24a(4) =48a(5) =60a(6) =192a(7) =120a(8) =180a(9) =240a(10) =3072a(11) =360a(12) =12288a(13) =960a(14) =720a(15) =840a(16) =196608a(17) =1260a(18) =786432a(19) =1680a(20) =2880a(21) =15360a(22) =12582912a(23) =2520a(24) =6480a(25) =61440a(26) =6300a(27) =6720a(28) =805306368a(29) =5040