a(n) = ((8+sqrt(5))^n + (8-sqrt(5))^n)/2.
A152109
a(n) = ((8+sqrt(5))^n + (8-sqrt(5))^n)/2.
Terms
- a(0) =1a(1) =8a(2) =69a(3) =632a(4) =6041a(5) =59368a(6) =593469a(7) =5992792a(8) =60870001a(9) =620345288a(10) =6334194549a(11) =64746740792a(12) =662230374281
External references
- oeis: A152109