a(n) = Sum_{k=0..n} (k-1)^(k-1) * binomial(n,k).
A360193
a(n) = Sum_{k=0..n} (k-1)^(k-1) * binomial(n,k).
Terms
- a(0) =-1a(1) =0a(2) =2a(3) =9a(4) =52a(5) =445a(6) =5166a(7) =75019a(8) =1300776a(9) =26167257a(10) =598577770a(11) =15337224991a(12) =435020120316
External references
- oeis: A360193