a(n) = ( (9 + sqrt(6))^n - (9 - sqrt(6))^n )/(2*sqrt(6)).
A154241
a(n) = ( (9 + sqrt(6))^n - (9 - sqrt(6))^n )/(2*sqrt(6)).
Terms
- a(0) =1a(1) =18a(2) =249a(3) =3132a(4) =37701a(5) =443718a(6) =5159349a(7) =59589432a(8) =685658601a(9) =7872647418a(10) =90283258449
External references
- oeis: A154241