a(n) = lcm(s(1),...,s(n)) where {s(n)} = A024619 and a(0) = 1.

Terms

a(0) =1a(1) =6a(2) =30a(3) =60a(4) =420a(5) =420a(6) =1260a(7) =1260a(8) =1260a(9) =13860a(10) =27720a(11) =360360a(12) =360360a(13) =360360a(14) =360360a(15) =6126120a(16) =6126120a(17) =6126120a(18) =116396280a(19) =116396280a(20) =116396280a(21) =116396280a(22) =116396280a(23) =116396280a(24) =2677114440a(25) =5354228880a(26) =26771144400