a(n) = ((9 + sqrt(8))^n + (9 - sqrt(8))^n)/2.
A152267
a(n) = ((9 + sqrt(8))^n + (9 - sqrt(8))^n)/2.
Terms
- a(0) =1a(1) =9a(2) =89a(3) =945a(4) =10513a(5) =120249a(6) =1397033a(7) =16368417a(8) =192648097a(9) =2272771305a(10) =26846572409a(11) =317325998097
External references
- oeis: A152267