a(0) = a(1) = 0; thereafter a(n) = a(n-1)*a(n-2) + 2.
A142471
a(0) = a(1) = 0; thereafter a(n) = a(n-1)*a(n-2) + 2.
Terms
- a(0) =0a(1) =0a(2) =2a(3) =2a(4) =6a(5) =14a(6) =86a(7) =1206a(8) =103718a(9) =125083910
External references
- oeis: A142471
A142471
a(0) = a(1) = 0; thereafter a(n) = a(n-1)*a(n-2) + 2.