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 A004950 #25 Oct 28 2023 11:52:10
%S A004950 0,1364,2728,4092,5456,6820,8184,9548,10912,12276,13640,15004,16368,
%T A004950 17732,19096,20460,21824,23188,24552,25916,27280,28644,30008,31372,
%U A004950 32736,34100,35464,36828,38192
%N A004950 a(n) = round(n*phi^15), where phi is the golden ratio, A001622.
%C A004950 Differs from A004930 first at n = 681. phi^15 = 682 + 305*sqrt(5) = 1364.0007... - _R. J. Mathar_, Oct 28 2008
%H A004950 Harvey P. Dale, <a href="/A004950/b004950.txt">Table of n, a(n) for n = 0..1000</a>
%H A004950 Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/NonRecursions.html">Non Recursions</a>.
%t A004950 With[{c=GoldenRatio^15},Round[c*Range[0,30]]] (* _Harvey P. Dale_, Jan 20 2021 *)
%Y A004950 Cf. A001622, A004930.
%K A004950 nonn
%O A004950 0,2
%A A004950 _N. J. A. Sloane_