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 A172323 #13 Feb 04 2025 12:38:05
%S A172323 0,3,7,10,14,18,21,25,29,32,36,40,43,47,51,54,58,62,65,69,73,76,80,83,
%T A172323 87,91,94,98,102,105,109,113,116,120,124,127,131,135,138,142,146,149,
%U A172323 153,156,160,164,167,171,175,178,182,186,189,193,197,200,204,208,211
%N A172323 a(n) = floor(n*(sqrt(5)+sqrt(2))).
%H A172323 Vincenzo Librandi, <a href="/A172323/b172323.txt">Table of n, a(n) for n = 0..1000</a>
%t A172323 With[{c=Sqrt[5]+Sqrt[2]},Floor[c*Range[0,60]]] (* _Harvey P. Dale_, Sep 03 2012 *)
%o A172323 (Magma) [Floor(n*(Sqrt(5)+Sqrt(2))): n in [0..60]];
%K A172323 nonn,less
%O A172323 0,2
%A A172323 _Vincenzo Librandi_, Feb 01 2010