This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A289663 #18 Jul 05 2025 10:00:07 %S A289663 17,119,279,1858,5471,29301,53474,117303,220523,611374,2642391, %T A289663 2672025,2952463,41192601,237611044,1967277194,13692930957, %U A289663 64358549949,79880100420,220369251374,232880841877,618765808209,1882062587041,9607847299025,19364476224949,26396066576762,37636861534247,114519204438979,173975018331581,228013888964263,259777078505983,284734190312531,644744279642231 %N A289663 a(n) is the largest m such that p = n-th popular prime = A385503(n) is popular on the interval [2,m]. %C A289663 There is a slight doubt about these numbers since McNew only carried a search up to a certain point. %C A289663 See A385503 for further links and information. %H A289663 Nathan McNew, <a href="https://www.researchgate.net/profile/Nathan-Mcnew/publication/275363769_Popular_values_of_the_largest_prime_divisor_function/">Popular values of the largest prime divisor function</a> (corrected version), page 16, November 2015. %Y A289663 Cf. A006530, A385503, A289661-A289665. %K A289663 nonn %O A289663 1,1 %A A289663 _N. J. A. Sloane_, Jul 25 2017 %E A289663 Edited, with terms updated from revised version of McNew, by _Peter Munn_, Jul 04 2025