a(n) = n! for n < 4; else a(n) = floor(P(n-1)/n) where P(n) = a(1) * a(2) * ... * a(n).
A076041
a(n) = n! for n < 4; else a(n) = floor(P(n-1)/n) where P(n) = a(1) * a(2) * ... * a(n).
Terms
- a(0) =1a(1) =2a(2) =6a(3) =3a(4) =7a(5) =42a(6) =1512a(7) =2000376
External references
- oeis: A076041