a(n) = ( (6 + sqrt(7))^n - (6 - sqrt(7))^n )/(2*sqrt(7)).
A154247
a(n) = ( (6 + sqrt(7))^n - (6 - sqrt(7))^n )/(2*sqrt(7)).
Terms
- a(0) =1a(1) =12a(2) =115a(3) =1032a(4) =9049a(5) =78660a(6) =681499a(7) =5896848a(8) =50998705a(9) =440975868a(10) =3812747971a(11) =32964675480a(12) =285006414601
External references
- oeis: A154247