a(n) = ((11-sqrt(11))^n + (11+sqrt(11))^n) / 2.

A289415

a(n) = ((11-sqrt(11))^n + (11+sqrt(11))^n) / 2.

Terms

    a(0) =1a(1) =11a(2) =132a(3) =1694a(4) =22748a(5) =314116a(6) =4408272a(7) =62429224a(8) =888533008a(9) =12680511536a(10) =181232622912

External references