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 A187472 #6 Dec 04 2016 19:46:24 %S A187472 1,3,5,7,9,11,13,14,17,18,20,22,24,26,28,30,32,33,35,38,40,41,43,45, %T A187472 47,49,51,53,54,56,58,60,62,64,66,68,70,72,74,75,77,79,81,83,85,87,89, %U A187472 91,93,94,96,98,100,102,104,106,108,110,112,114,115,117,119,121,123,125 %N A187472 Rank transform of the sequence floor((e-1)n); complement of A187473. %C A187472 See A187224. %t A187472 m = E-1; %t A187472 seqA = Table[Floor[m*n], {n, 1, 180}] (* A000210 *) %t A187472 seqB = Table[n, {n, 1, 80}]; (* A000027 *) %t A187472 jointRank[{seqA_, seqB_}] := {Flatten@Position[#1, {_, 1}], %t A187472 Flatten@Position[#1, {_, 2}]} &[Sort@Flatten[{{#1, 1} & /@ seqA, %t A187472 {#1, 2} & /@ seqB}, 1]]; %t A187472 limseqU = FixedPoint[jointRank[{seqA, #1[[1]]}] &, jointRank[{seqA, seqB}]][[1]] (* A187472 *) %t A187472 Complement[Range[Length[seqA]], limseqU] (* A187473 *) %t A187472 (* by _Peter J. C. Moses_, Mar 10 2011 *) %Y A187472 Cf. A187224, A187473. %K A187472 nonn %O A187472 1,2 %A A187472 _Clark Kimberling_, Mar 10 2011