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 A138194 #4 Jan 25 2025 16:35:33
%S A138194 1,1,1,2,2,2,2,2,2,3,3,3,3,3,3,4,4,4,4,4,4,4,5,5,5,5,5,5,5,6,6,6,6,6,
%T A138194 6,6,6,7,7,7,7,7,7,7,8,8,8,8,8,8,8,8,9,9,9,9,9,9,9,9,10,10,10,10,10,
%U A138194 10,10,10,10,11,11,11,11,11,11,11,11,12,12,12,12,12,12,12,12,12,13,13,13,13
%N A138194 Floor(2*n/(3*log(n))).
%C A138194 a(n) <= A000720(n) <= A138195(n), (Tschebyscheff, 1850).
%t A138194 Table[Floor[(2n)/(3Log[n])],{n,2,100}] (* _Harvey P. Dale_, Jan 25 2025 *)
%Y A138194 Cf. A050500, A050499, A050501.
%K A138194 nonn
%O A138194 2,4
%A A138194 _Reinhard Zumkeller_, Mar 04 2008