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 A180729 #13 Oct 05 2019 04:46:37 %S A180729 1,22,3011361496339065143296,484,5153632,6221821273427820544, %T A180729 705429498686404044207947776,851643319086537701956194499721106030592, %U A180729 9068298061633453450429559033030337013743616,10648,113379904 %N A180729 Smallest power of 22 that begins with n. %Y A180729 Cf. A009966, A180727, A180730, A180731. %K A180729 nonn,base %O A180729 1,2 %A A180729 _Daniel Mondot_, Sep 18 2010