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 A306498 #13 Apr 12 2021 14:28:59 %S A306498 11,37,13,41,14,8,18,6,2,7,3,1,241,3215,2392,35698,267345,893521, %T A306498 29831625,3232453125 %N A306498 Smallest number m such that A306494(m) = n. %C A306498 This sequence is finite with at most 36 terms. %Y A306498 Cf. A306494. %K A306498 nonn,fini,more %O A306498 0,1 %A A306498 _Chai Wah Wu_, Feb 20 2019