a(n) = a(n-1)*(1 + a(n-1) - a(n-2)), a(0) = 0, a(1) = 1.
A001696
a(n) = a(n-1)*(1 + a(n-1) - a(n-2)), a(0) = 0, a(1) = 1.
Terms
- a(0) =0a(1) =1a(2) =2a(3) =4a(4) =12a(5) =108a(6) =10476a(7) =108625644
External references
- oeis: A001696
A001696
a(n) = a(n-1)*(1 + a(n-1) - a(n-2)), a(0) = 0, a(1) = 1.