A367020 Largest prime factor of A000058(n) = A007018(n) + 1 (Sylvester's sequence).

2, 3, 7, 43, 139, 3263443, 31051, 6212157481, 77366930214021991992277, 35874380272246624152764569191134894955972560447869169859142453622851

Offset: 0

Author

Sean A. Irvine, Nov 01 2023

Keywords

• nonn

Links

• Amiram Eldar, Table of n, a(n) for n = 0..10
• Filip Saidak, A new proof of Euclid's theorem, Amer. Math. Monthly, 113:10 (2006) 937-938.
• Wikipedia, Sylvester's sequence: Divisibility and factorizations.

Crossrefs

Cf. A000058, A007018, A006530, A091335, A323605.

Formula

a(n) = A006530(A000058(n)).