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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.

A187911 Rank transform of the sequence (1+floor(n*r)), where r=(-1+sqrt(5))/2; complement of A187912.

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%I A187911 #11 Aug 08 2025 05:03:12
%S A187911 1,3,4,5,7,8,10,11,13,14,15,17,19,20,21,22,24,26,27,28,29,31,33,34,36,
%T A187911 37,38,40,41,42,44,45,47,49,50,52,53,54,56,57,58,59,61,63,64,66,68,69,
%U A187911 70,71,73,74,75,77,78,80,81,82,84,86,87,89,90,91,93,94,96,98,99,100,101,103,105,106,107,108,110,111,112,114,116,117,118,119
%N A187911 Rank transform of the sequence (1+floor(n*r)), where r=(-1+sqrt(5))/2; complement of A187912.
%C A187911 See A187224.
%t A187911 r=(-1+5^(1/2))/2;
%t A187911 seqA = Table[1+Floor[r*n], {n, 1, 220}] (* A019446 *)
%t A187911 seqB = Table[n, {n, 1, 220}];  (* A000027 *)
%t A187911 jointRank[{seqA_,
%t A187911    seqB_}] := {Flatten@Position[#1, {_, 1}],
%t A187911     Flatten@Position[#1, {_, 2}]} &[
%t A187911   Sort@Flatten[{{#1, 1} & /@ seqA, {#1, 2} & /@ seqB}, 1]];
%t A187911 limseqU =
%t A187911  FixedPoint[jointRank[{seqA, #1[[1]]}] &,
%t A187911    jointRank[{seqA, seqB}]][[1]] (* A187911 *)
%t A187911 Complement[Range[Length[seqA]], limseqU]  (* A187912 *)
%t A187911 (* _Peter J. C. Moses_, Mar 15 2011 *)
%Y A187911 Cf. A187224, A187912.
%K A187911 nonn
%O A187911 1,2
%A A187911 _Clark Kimberling_, Mar 15 2011