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 A180701 #10 Oct 05 2019 04:53:51
%S A180701 1,289,34271896307633,4913,582622237229761,6975757441,
%T A180701 7961145753492658188015880378976844387030440651052782229932477774154576998240582422097,
%U A180701 83521,9904578032905937
%N A180701 Smallest power of 17 that begins with n.
%t A180701 With[{s=17^Range[0,80]},Table[First[Select[s,First[IntegerDigits[#]]==n&]], {n,9}]] (* _Harvey P. Dale_, Mar 24 2011 *)
%Y A180701 Cf. A001026, A180699, A180702, A180703.
%K A180701 nonn,base
%O A180701 1,2
%A A180701 _Daniel Mondot_, Sep 18 2010