a(0) = a(1) = 1 and a(n+2) = a(n+1) * (3*a(n+1) - 2*a(n)^2), n>=0.
A144621
a(0) = a(1) = 1 and a(n+2) = a(n+1) * (3*a(n+1) - 2*a(n)^2), n>=0.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =21a(4) =945a(5) =1845585
External references
- oeis: A144621
A144621
a(0) = a(1) = 1 and a(n+2) = a(n+1) * (3*a(n+1) - 2*a(n)^2), n>=0.