a(n) = ( Sum_{k=0..n} (-1)^(n-k)*binomial(n, k)*Bell(k) )*( Sum_{k=1..n} (k-1)!*binomial(n-1, k-1)*binomial(n, k-1) ).
A100524
a(n) = ( Sum_{k=0..n} (-1)^(n-k)*binomial(n, k)*Bell(k) )*( Sum_{k=1..n} (k-1)!*binomial(n-1, k-1)*binomial(n, k-1) ).
Terms
- a(0) =0a(1) =3a(2) =13a(3) =292a(4) =5511a(5) =166091a(6) =6096546a(7) =281962395a(8) =15743194025
External references
- oeis: A100524