a(1) = a(2) = 1; if n > 2 then a(n) = a(n-1)*a(n-2) - a(n-2) - a(n-1).
A268021
a(1) = a(2) = 1; if n > 2 then a(n) = a(n-1)*a(n-2) - a(n-2) - a(n-1).
Terms
- a(0) =1a(1) =1a(2) =-1a(3) =-1a(4) =3a(5) =-5a(6) =-13a(7) =83a(8) =-1149a(9) =-94301a(10) =108447299
External references
- oeis: A268021