a(n) = ((6 + sqrt(7))^n + (6 - sqrt(7))^n) / 2.
A146966
a(n) = ((6 + sqrt(7))^n + (6 - sqrt(7))^n) / 2.
Terms
- a(0) =1a(1) =6a(2) =43a(3) =342a(4) =2857a(5) =24366a(6) =209539a(7) =1807854a(8) =15617617a(9) =134983638a(10) =1166892763a(11) =10088187654a(12) =87218361721a(13) =754062898686
External references
- oeis: A146966