a(n) = 4*a(n-1)*a(n-2) - a(n-3), with a(1) = a(2) = a(3) = 1.
A276258
a(n) = 4*a(n-1)*a(n-2) - a(n-3), with a(1) = a(2) = a(3) = 1.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =11a(5) =131a(6) =5761a(7) =3018753a(8) =69564144001
External references
- oeis: A276258