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 A190455 #10 Aug 27 2021 05:59:05
%S A190455 3,6,11,16,19,24,29,32,37,40,45,50,53,58,61,63,66,71,74,79,84,87,92,
%T A190455 95,100,105,108,113,116,118,121,126,129,134,139,142,147,150,155,160,
%U A190455 163,168,173,176,181,184,189,194,197,202,205,207,210,215,218,223,228,231,236,239,244,249,252,257,262,265
%N A190455 Positions of 3 in A190451.
%C A190455 See A190451.
%t A190455 r = GoldenRatio; b = 4; c = 2;
%t A190455 f[n_] := Floor[(b*n + c)*r] - b*Floor[n*r] - Floor[c*r];
%t A190455 t = Table[f[n], {n, 1, 320}] (* A190451 *)
%t A190455 Flatten[Position[t, 3]]
%Y A190455 Cf. A190451.
%K A190455 nonn
%O A190455 1,1
%A A190455 _Clark Kimberling_, May 10 2011
%E A190455 Missing term 3 inserted by _Georg Fischer_, Aug 27 2021