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 A172268 #13 Sep 08 2022 08:45:50
%S A172268 0,0,1,2,3,4,5,6,7,8,9,10,10,11,12,13,14,15,16,17,18,19,20,21,21,22,
%T A172268 23,24,25,26,27,28,29,30,31,31,32,33,34,35,36,37,38,39,40,41,42,42,43,
%U A172268 44,45,46,47,48,49,50,51,52,52,53,54,55,56,57,58,59,60,61,62,63,63,64,65
%N A172268 a(n) = floor(n*(sqrt(7)-sqrt(3))).
%C A172268 Differs from the Beatty sequence of the Catalan constant A006752 first at n=35. - _R. J. Mathar_, May 22 2019
%H A172268 Vincenzo Librandi, <a href="/A172268/b172268.txt">Table of n, a(n) for n = 0..1000</a>
%t A172268 With[{c=Sqrt[7]-Sqrt[3]},Floor[c*Range[0,80]]] (* _Harvey P. Dale_, Nov 20 2012 *)
%o A172268 (Magma) [Floor(n*(Sqrt(7)-Sqrt(3))): n in [0..80]]; // _Vincenzo Librandi_, Aug 01 2013
%Y A172268 Cf. A172264, A172266-A172270, A172272-A172278.
%K A172268 nonn,easy
%O A172268 0,4
%A A172268 _Vincenzo Librandi_, Jan 30 2010