Number of integers in {1, 2, ..., n!} that are coprime to n.
A074930
Number of integers in {1, 2, ..., n!} that are coprime to n.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =12a(4) =96a(5) =240a(6) =4320a(7) =20160a(8) =241920a(9) =1451520a(10) =36288000a(11) =159667200a(12) =5748019200a(13) =37362124800a(14) =697426329600
External references
- oeis: A074930