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 A172273 #15 Sep 08 2022 08:45:50
%S A172273 0,1,3,5,7,9,11,13,15,17,19,20,22,24,26,28,30,32,34,36,38,39,41,43,45,
%T A172273 47,49,51,53,55,57,58,60,62,64,66,68,70,72,74,76,77,79,81,83,85,87,89,
%U A172273 91,93,95,97,98,100,102,104,106,108,110,112,114,116,117,119,121,123,125
%N A172273 a(n) = floor(n*(sqrt(11) - sqrt(2))).
%C A172273 Initially similar to A038124 because sqrt(11)-sqrt(2) = 1.90241122... is close to A065421. - _R. J. Mathar_, Feb 05 2010
%H A172273 Vincenzo Librandi, <a href="/A172273/b172273.txt">Table of n, a(n) for n = 0..1000</a>
%H A172273 <a href="/index/Be#Beatty">Index entries for sequences related to Beatty sequences</a>
%t A172273 With[{c = Sqrt[11] - Sqrt[2]}, Floor[c Range[0, 80]]] (* _Vincenzo Librandi_, Aug 01 2013 *)
%o A172273 (Magma) [Floor(n*(Sqrt(11)-Sqrt(2))): n in [0..80]]; // _Vincenzo Librandi_, Aug 01 2013
%o A172273 (PARI) vector(100, n, n--; floor(n*(sqrt(11) - sqrt(2)))) \\ _G. C. Greubel_, Aug 18 2018
%Y A172273 Cf. A172264, A172266-A172270, A172272-A172278.
%K A172273 nonn,easy
%O A172273 0,3
%A A172273 _Vincenzo Librandi_, Jan 30 2010