login
A262225
Euclid-Mullin sequence: a(1) = 5, a(n+1) is largest prime factor of Product_{k=1..n} a(k) + 1.
1
5, 3, 2, 31, 19, 431, 3457, 24907963, 250198320553451, 164072502171958410481596412086571, 15268641997545743809809010755124846521575738536063
OFFSET
1,1
COMMENTS
This is similar to A000946 but starting a(1) = 5.
LINKS
MATHEMATICA
a = {5}; Do[AppendTo[a, FactorInteger[Product[a[[k]], {k, n - 1}] + 1][[-1, 1]]], {n, 2, 11}]; a (* Michael De Vlieger, Sep 15 2015 *)
CROSSREFS
Cf. A000946.
Sequence in context: A259228 A241182 A193799 * A330092 A064812 A282469
KEYWORD
nonn
AUTHOR
Ben Meekins, Sep 15 2015
STATUS
approved