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 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 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS This is similar to A000946 but starting a(1) = 5. LINKS Ben Meekins, Table of n, a(n) for n = 1..12 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 * A064812 A282469 A216998 Adjacent sequences:  A262222 A262223 A262224 * A262226 A262227 A262228 KEYWORD nonn AUTHOR Ben Meekins, Sep 15 2015 STATUS approved

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Last modified July 17 23:21 EDT 2019. Contains 325109 sequences. (Running on oeis4.)