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 A289661 #18 Jul 05 2025 10:00:39 %S A289661 2,3,45,70,1456,4845,20332,46345,106812,153032,592760,2484190,2620033, %T A289661 2623860,41163150,237321819,1966462280,13690728506,64322151699, %U A289661 79838726306,220355977754,232268764689,618745965579,1882062393429,9607711921430,19364051434020,26393150922356,37636607775855,114514665136326,173974642506024,228013323182523,259772852488365,284600479332862,644741545074402 %N A289661 a(n) is the smallest m such that p = n-th popular prime = A385503(n) is popular on the interval [2,m]. %C A289661 See A385503 for further links and information. %H A289661 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 A289661 Cf. A006530, A385503, A289662-A289665. %K A289661 nonn %O A289661 1,1 %A A289661 _N. J. A. Sloane_, Jul 25 2017 %E A289661 Edited, with terms updated from revised version of McNew, by _Peter Munn_, Jul 04 2025