Least number with the prime signature of the n-th Jacobsthal number.

Terms

a(0) =1a(1) =1a(2) =2a(3) =2a(4) =2a(5) =6a(6) =2a(7) =6a(8) =12a(9) =6a(10) =2a(11) =210a(12) =2a(13) =6a(14) =30a(15) =30a(16) =2a(17) =420a(18) =2a(19) =420a(20) =30a(21) =30a(22) =2a(23) =30030a(24) =30a(25) =6a(26) =120a(27) =2310a(28) =6a(29) =30030