a(n) = 9*a(n-1) - 9*a(n-2) + a(n-3); given a(1) = 1, a(2) = 3, a(3) = 19.
A095002
a(n) = 9*a(n-1) - 9*a(n-2) + a(n-3); given a(1) = 1, a(2) = 3, a(3) = 19.
Terms
- a(0) =1a(1) =3a(2) =19a(3) =145a(4) =1137a(5) =8947a(6) =70435a(7) =554529a(8) =4365793a(9) =34371811a(10) =270608691a(11) =2130497713a(12) =16773373009a(13) =132056486355
External references
- oeis: A095002