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 A065204 #10 Aug 21 2023 16:43:30 %S A065204 1,3,22,191,2206,29054,497585 %N A065204 Least m such that A065203(m) = n. %C A065204 Conjecture: A064413(a(n)) = A002110(n) (primorial numbers), i.e., a(n) sets positions of primorial numbers in A064413. %Y A065204 Cf. A064413, A064742, A065203, A002110. %K A065204 nonn,hard,more %O A065204 1,2 %A A065204 _Vladeta Jovovic_, Oct 21 2001 %E A065204 a(6)-a(7) from _Sean A. Irvine_, Aug 21 2023