a(2n)=2*a(2n-2)^2-1, a(2n+1)=2*a(2n)-1, a(0)=2.
A006695
a(2n)=2*a(2n-2)^2-1, a(2n+1)=2*a(2n)-1, a(0)=2.
Terms
- a(0) =2a(1) =3a(2) =7a(3) =13a(4) =97a(5) =193a(6) =18817a(7) =37633a(8) =708158977a(9) =1416317953
External references
- oeis: A006695
A006695
a(2n)=2*a(2n-2)^2-1, a(2n+1)=2*a(2n)-1, a(0)=2.