a(1) = 1, a(2) = 9, a(n+2) = 9*a(n+1) + (n + 1)^2*a(n).
A142982
a(1) = 1, a(2) = 9, a(n+2) = 9*a(n+1) + (n + 1)^2*a(n).
Terms
- a(0) =1a(1) =9a(2) =85a(3) =846a(4) =8974a(5) =101916a(6) =1240308a(7) =16156656a(8) =224789616a(9) =3331795680a(10) =52465122720a(11) =875333381760
External references
- oeis: A142982