a(n) = Sum_{k=1..n} (-1)^(n - k) * H(k) * k!, where H(k) is the k-th harmonic number.
A330016
a(n) = Sum_{k=1..n} (-1)^(n - k) * H(k) * k!, where H(k) is the k-th harmonic number.
Terms
- a(0) =0a(1) =1a(2) =2a(3) =9a(4) =41a(5) =233a(6) =1531a(7) =11537a(8) =98047a(9) =928529a(10) =9700111a(11) =110843729a(12) =1375599151a(13) =18427159889a(14) =265038487471
External references
- oeis: A330016