a(n) = Sum_{k=0..n} Stirling1(n,k)*Stirling2(n,k).
A047792
a(n) = Sum_{k=0..n} Stirling1(n,k)*Stirling2(n,k).
Terms
- a(0) =1a(1) =1a(2) =0a(3) =-6a(4) =36a(5) =50a(6) =-6575a(7) =145222a(8) =-1489978a(9) =-49083480a(10) =4200404478a(11) =-182031111702
External references
- oeis: A047792