a(n) = n!*(1/1 + 1/2 + ... + 1/n) - (1! + 2! + ... + n!).
A161128
a(n) = n!*(1/1 + 1/2 + ... + 1/n) - (1! + 2! + ... + n!).
Terms
- a(0) =0a(1) =0a(2) =0a(3) =2a(4) =17a(5) =121a(6) =891a(7) =7155a(8) =63351a(9) =617463a(10) =6590727a(11) =76589127a(12) =963486567a(13) =13052781927a(14) =189537379047
External references
- oeis: A161128