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 A004940 #19 Dec 05 2023 01:36:01
%S A004940 0,11,22,33,44,55,67,78,89,100,111,122,133,144,155,166,177,189,200,
%T A004940 211,222,233,244,255,266,277,288,299,311,322,333,344,355,366,377,388,
%U A004940 399,410,421,433,444,455,466,477
%N A004940 a(n) = round(n*phi^5), where phi is the golden ratio, A001622.
%H A004940 G. C. Greubel, <a href="/A004940/b004940.txt">Table of n, a(n) for n = 0..10000</a>
%t A004940 With[{c=GoldenRatio^5},Round[c*Range[0,50]]] (* _Harvey P. Dale_, Nov 28 2021 *)
%o A004940 (Magma) [Round(n*(11+5*Sqrt(5))/2): n in [0..80]]; // _G. C. Greubel_, Dec 04 2023
%o A004940 (SageMath) [round(golden_ratio^5*n) for n in range(81)] # _G. C. Greubel_, Dec 04 2023
%Y A004940 Cf. A001622, A004939, A004941, A004942, A004943.
%K A004940 nonn
%O A004940 0,2
%A A004940 _N. J. A. Sloane_