a(n) = Sum_{k=0..n} 3^k*F(k) where F(k) is the k-th Fibonacci number.
A082987
a(n) = Sum_{k=0..n} 3^k*F(k) where F(k) is the k-th Fibonacci number.
Terms
- a(0) =0a(1) =3a(2) =12a(3) =66a(4) =309a(5) =1524a(6) =7356a(7) =35787a(8) =173568a(9) =842790a(10) =4090485a(11) =19856568a(12) =96384072a(13) =467861331a(14) =2271040644a(15) =11023873914a(16) =53510987541a(17) =259747827852
External references
- oeis: A082987