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 A094977 #11 Sep 08 2022 08:45:13
%S A094977 1,3,11,37,123,411,1371,4572,15241,50805,169350,564502,1881676,
%T A094977 6272254,20907515,69691719,232305731,774352437,2581174791,8603915972,
%U A094977 28679719907,95599066359,318663554532,1062211848441,3540706161472
%N A094977 a(n) = floor(10^n/3^n).
%H A094977 Vincenzo Librandi, <a href="/A094977/b094977.txt">Table of n, a(n) for n = 0..1000</a>
%t A094977 Table[ Floor[(10/3)^n], {n, 0, 30}]
%o A094977 (Magma) [Floor(10^n / 3^n): n in [0..30]]; // _Vincenzo Librandi_, Sep 08 2011
%Y A094977 Cf. A002379, A094969-A094999.
%K A094977 nonn,easy
%O A094977 0,2
%A A094977 _Robert G. Wilson v_, May 26 2004