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 A345685 #8 Jul 01 2021 15:51:02
%S A345685 6,6,7,7,6,7,6,6,6,6,7,6,6,7,7,6
%N A345685 a(n) is the smallest cardinality of all covering sets associated with Riesel number A101036(n).
%C A345685 The condition for choosing a covering set is necessary as there are Riesel numbers with more than one covering set, see A263392.
%H A345685 Prime Wiki, <a href="https://www.rieselprime.de/ziki/Category:Riesel_k%3DRiesel">Category:Riesel k=Riesel</a> [Links to pages giving the covering sets of Riesel numbers]
%H A345685 Wikipedia, <a href="https://en.wikipedia.org/wiki/Riesel_number">Riesel number</a>
%e A345685 n | Riesel number | Covering set | a(n)
%e A345685 --------------------------------------------------------
%e A345685 1 | 509203 | {3, 5, 7, 13, 17, 241} | 6
%e A345685 2 | 762701 | {3, 5, 7, 13, 17, 241} | 6
%e A345685 3 | 777149 | {3, 5, 7, 13, 19, 37, 73} | 7
%e A345685 4 | 790841 | {3, 5, 7, 13, 19, 37, 73} | 7
%e A345685 5 | 992077 | {3, 5, 7, 13, 17, 241} | 6
%e A345685 6 | 1106681 | {3, 5, 7, 13, 19, 37, 73} | 7
%e A345685 7 | 1247173 | {3, 5, 7, 13, 17, 241} | 6
%e A345685 8 | 1254341 | {3, 5, 7, 13, 17, 241} | 6
%e A345685 9 | 1330207 | {3, 5, 7, 13, 17, 241} | 6
%e A345685 10 | 1330319 | {3, 5, 7, 13, 17, 241} | 6
%e A345685 11 | 1715053 | {3, 5, 7, 13, 19, 37, 73} | 7
%e A345685 12 | 1730653 | {3, 5, 7, 13, 17, 241} | 6
%e A345685 13 | 1730681 | {3, 5, 7, 13, 17, 241} | 6
%e A345685 14 | 1744117 | {3, 5, 7, 13, 19, 73, 109} | 7
%e A345685 15 | 1830187 | {3, 5, 7, 13, 37, 73, 109} | 7
%e A345685 16 | 1976473 | {3, 5, 7, 13, 17, 241} | 6
%Y A345685 Cf. A101036, A244070, A244071, A244072, A244073, A244074, A263392.
%K A345685 nonn,hard,more
%O A345685 1,1
%A A345685 _Felix Fröhlich_, Jun 23 2021