A064493 List of distinct greatest common divisors of { k! and k! - (k-1)! + (k-2)! - ... + (-1)^k*0!, k = 0 .. n}.

1, 2, 4, 20, 260, 9620, 4454060

Offset: 0

Author

Vladeta Jovovic, Oct 04 2001

Keywords

• hard
• more
• nonn

Comments

Records in the sequence gcd(k!,A058006(k)). The record indices are products of primes from A064384. There are no further terms unless there are terms in A064384 larger than 463. - Max Alekseyev, Jul 06 2010

Crossrefs

Cf. A000142, A058006, A064383, A064384, A005165.