a(n) = ((9+sqrt(6))^n + (9-sqrt(6))^n)/2.
A152264
a(n) = ((9+sqrt(6))^n + (9-sqrt(6))^n)/2.
Terms
- a(0) =1a(1) =9a(2) =87a(3) =891a(4) =9513a(5) =104409a(6) =1165887a(7) =13155291a(8) =149353713a(9) =1701720009a(10) =19429431687a(11) =222100769691
External references
- oeis: A152264