a(1) = 1, a(n) = a(n-1) times largest nontrivial divisor if n is composite.
A072487
a(1) = 1, a(n) = a(n-1) times largest nontrivial divisor if n is composite.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =12a(4) =60a(5) =180a(6) =1260a(7) =5040a(8) =15120a(9) =75600a(10) =831600a(11) =4989600a(12) =64864800a(13) =454053600a(14) =2270268000a(15) =18162144000a(16) =308756448000
External references
- oeis: A072487