a(n) = Sum_{k=2..n-1} k*A259698(n,k).
A259700
a(n) = Sum_{k=2..n-1} k*A259698(n,k).
Terms
- a(0) =1a(1) =3a(2) =8a(3) =25a(4) =72a(5) =229a(6) =689a(7) =2224a(8) =6875a(9) =22457a(10) =70767
External references
- oeis: A259700
A259700
a(n) = Sum_{k=2..n-1} k*A259698(n,k).