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 A094978 #18 Sep 08 2022 08:45:13
%S A094978 1,3,13,49,180,662,2430,8910,32671,119796,439252,1610592,5905506,
%T A094978 21653524,79396256,291119607,1067438559,3913941385,14351118413,
%U A094978 52620767516,192942814227,707456985499,2594008946832,9511366138386
%N A094978 a(n) = floor(11^n/3^n).
%H A094978 Vincenzo Librandi, <a href="/A094978/b094978.txt">Table of n, a(n) for n = 0..900</a>
%t A094978 Table[ Floor[(11/3)^n], {n, 0, 30}]
%o A094978 (Magma) [Floor(11^n / 3^n): n in [0..30]]; // _Vincenzo Librandi_, Sep 08 2011
%o A094978 (Maxima) A094978(n):=floor(11^n/3^n)$ makelist(A094978(n),n,0,60); /* _Martin Ettl_, Oct 25 2012 */
%o A094978 (PARI) a(n) = 11^n\3^n; \\ _Altug Alkan_, Sep 08 2018
%Y A094978 Cf. A002379, A094969 - A094999.
%K A094978 nonn,easy
%O A094978 0,2
%A A094978 _Robert G. Wilson v_, May 26 2004