a(0)=1 and a(1)=2, then each term is x + y + x*y where x and y are the 2 last terms.
A254132
a(0)=1 and a(1)=2, then each term is x + y + x*y where x and y are the 2 last terms.
Terms
- a(0) =1a(1) =2a(2) =5a(3) =17a(4) =107a(5) =1943a(6) =209951a(7) =408146687
External references
- oeis: A254132