a(n) is the sum of the divisors of n!-1.

A366757

a(n) is the sum of the divisors of n!-1.

Terms

    a(0) =1a(1) =6a(2) =24a(3) =144a(4) =720a(5) =5040a(6) =42096a(7) =399000a(8) =3753960a(9) =47500992a(10) =479001600a(11) =6230615736a(12) =87178291200

External references