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 A061390 #9 Feb 11 2023 22:26:50 %S A061390 3,5,7,14,38,172,823,6185,87223,1940494 %N A061390 Use same rules as A047988. Sequence gives smallest numbers which require n steps to reach 2. %C A061390 Some values calculated by Joseph Devincentis. %C A061390 a(11) > 5000000. - _David Wasserman_, Jun 21 2002 %H A061390 Erich Friedman, <a href="https://erich-friedman.github.io/mathmagic/0501.html">Math. Magic</a> %Y A061390 Cf. A047984. %K A061390 nonn,more %O A061390 1,1 %A A061390 _Jason Earls_, Jun 09 2001 %E A061390 More terms from _David Wasserman_, Jun 21 2002