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 A187895 #10 Dec 04 2016 19:46:25 %S A187895 1,2,4,5,7,8,9,10,12,13,14,16,17,18,20,21,23,24,25,27,28,30,31,32,33, %T A187895 35,37,38,40,41,42,43,45,46,47,49,50,52,53,54,55,57,59,60,61,62,63,65, %U A187895 66,68,70,71,72,73,74,76,78,79,80,81,82,84,86,87,89,90,91,93,94,95,97,98,99,100,102,103,105,106,107,108,109,111,113,114,116,117,118,120,121,122,123,125 %N A187895 Rank transform of the sequence A115384; complement of A187896. %C A187895 A187895 is the rank transform (see A187224) of the sequence of partial sums of the Thue-Morse sequence A010060. %t A187895 t = Nest[Flatten[# /. {0 -> {0, 1}, 1 -> {1, 0}}] &, {0}, 8]; t %t A187895 seqA = Table[Sum[t[[k]], {k, 1, n}], {n, 1, 256}] (* A115384 *) %t A187895 seqB = Table[n, {n, 1, 220}]; (* A000027 *) %t A187895 jointRank[{seqA_, %t A187895 seqB_}] := {Flatten@Position[#1, {_, 1}], %t A187895 Flatten@Position[#1, {_, 2}]} &[ %t A187895 Sort@Flatten[{{#1, 1} & /@ seqA, {#1, 2} & /@ seqB}, 1]]; %t A187895 limseqU = %t A187895 FixedPoint[jointRank[{seqA, #1[[1]]}] &, %t A187895 jointRank[{seqA, seqB}]][[1]] (* A187895 *) %t A187895 Complement[Range[Length[seqA]], limseqU] (* A187896 *) %t A187895 (* by _Peter J. C. Moses_, Mar 15 2011 *) %Y A187895 Cf. A187224, A187896, A187897. %K A187895 nonn %O A187895 1,2 %A A187895 _Clark Kimberling_, Mar 15 2011