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 A230664 #20 Dec 28 2024 19:33:41
%S A230664 3,2,3,5,9,20,44,102,243,590,1464,3690,9433,24402,63772,168151,446851,
%T A230664 1195742,3219560,8716961,23719621,64836900,177964421,490329056,
%U A230664 1355661775,3760156550,10460353203,29179582212,81605680576,228767924549,642740266684,1809590028175
%N A230664 a(n) = floor(3^n/n^2).
%F A230664 a(n) = floor(A000244(n)/A000290(n)).
%t A230664 Table[Floor[3^n/n^2], {n, 40}] (* _Wesley Ivan Hurt_, Apr 25 2023 *)
%o A230664 (Python)
%o A230664 for n in range(1,100): print(3**n // n**2, end=", ")
%Y A230664 Cf. A000244, A000290, A060505, A062278.
%Y A230664 Cf. A233441, A233471.
%K A230664 nonn
%O A230664 1,1
%A A230664 _Alex Ratushnyak_, Dec 11 2013