Group the even numbers as (2,4), (6,8,10,12), (14,16,18,20,22,24), (26,28,30,32,34,36,38,40), ... then a(n) = LCM of the n-th group.

A062081

Group the even numbers as (2,4), (6,8,10,12), (14,16,18,20,22,24), (26,28,30,32,34,36,38,40), ... then a(n) = LCM of the n-th group.

Terms

    a(0) =4a(1) =120a(2) =55440a(3) =42325920a(4) =7210803600

External references