cp's OEIS Frontend

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.

A187474 Rank transform of the sequence floor(n*(Pi-2)); complement of A187475.

This page as a plain text file.
%I A187474 #10 Apr 10 2021 23:57:17
%S A187474 1,3,4,6,8,9,11,13,15,16,18,19,21,22,25,26,28,30,31,33,35,36,38,40,41,
%T A187474 43,44,46,48,50,51,53,55,56,58,60,62,63,65,67,68,70,72,73,75,77,78,80,
%U A187474 81,84,85,87,88,90,91,93,95,97,98,100,102,103,105,107,109,110,112,113
%N A187474 Rank transform of the sequence floor(n*(Pi-2)); complement of A187475.
%C A187474 See A187224.
%t A187474 m = Pi-2;
%t A187474 seqA = Table[Floor[m*n], {n, 1, 180}]  (* A187320 *)
%t A187474 seqB = Table[n, {n, 1, 80}];           (* A000027 *)
%t A187474 jointRank[{seqA_, seqB_}] := {Flatten@Position[#1, {_, 1}],
%t A187474 Flatten@Position[#1, {_, 2}]} &[Sort@Flatten[{{#1, 1} & /@ seqA,
%t A187474 {#1, 2} & /@ seqB}, 1]];
%t A187474 limseqU = FixedPoint[jointRank[{seqA, #1[[1]]}] &, jointRank[{seqA, seqB}]][[1]]                                     (* A187474 *)
%t A187474 Complement[Range[Length[seqA]], limseqU]  (* A187475 *)
%t A187474 (* _Peter J. C. Moses_, Mar 10 2011 *)
%Y A187474 Cf. A187224, A187475.
%K A187474 nonn
%O A187474 1,2
%A A187474 _Clark Kimberling_, Mar 10 2011