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 A004955 #19 Oct 28 2023 11:50:17
%S A004955 0,15127,30254,45381,60508,75635,90762,105889,121016,136143,151270,
%T A004955 166397,181524,196651,211778,226905,242032,257159,272286,287413,
%U A004955 302540,317667,332794,347921,363048,378175,393302,408429,423556,438683,453810,468937,484064,499191,514318,529445,544572,559699
%N A004955 a(n) = round(n*phi^20), where phi is the golden ratio, A001622.
%C A004955 Not the same as A004975: a(n) != A004975(n) for n = 7564. [_Joerg Arndt_, Sep 17 2013]
%H A004955 Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/NonRecursions.html">Non Recursions</a>.
%t A004955 With[{g20=GoldenRatio^20},Round[Range[0,40]*g20]] (* _Harvey P. Dale_, Jun 11 2017 *)
%Y A004955 Cf. A001622, A004975.
%K A004955 nonn
%O A004955 0,2
%A A004955 _N. J. A. Sloane_