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A187685 Rank transform of the sequence floor(4n/3); complement of A187686. 3
1, 3, 5, 6, 8, 10, 12, 13, 15, 17, 19, 21, 22, 24, 26, 27, 29, 31, 33, 34, 37, 38, 40, 42, 43, 45, 47, 48, 50, 52, 54, 55, 58, 59, 61, 63, 65, 66, 68, 70, 71, 74, 75, 76, 79, 80, 82, 84, 85, 87, 89, 91, 92, 95, 96, 97, 100, 102, 103, 105, 107, 108, 110, 112, 114, 116, 117, 119, 121, 123, 124, 126, 128, 130, 131, 133, 134, 137, 138, 140, 142, 144 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

See A187224.

LINKS

Table of n, a(n) for n=1..82.

MATHEMATICA

seqA = Table[Floor[4n/3], {n, 1, 220}]

seqB = Table[n, {n, 1, 220}]; (*A000027*)

jointRank[{seqA_,

   seqB_}] := {Flatten@Position[#1, {_, 1}],

    Flatten@Position[#1, {_, 2}]} &[

  Sort@Flatten[{{#1, 1} & /@ seqA, {#1, 2} & /@ seqB}, 1]];

limseqU =

FixedPoint[jointRank[{seqA, #1[[1]]}] &,

   jointRank[{seqA, seqB}]][[1]] (*A187685*)

Complement[Range[Length[seqA]], limseqU]  (*A187686*)

(*by Peter J. C. Moses, Mar 12 2011*)

CROSSREFS

Cf. A187224, A187686.

Sequence in context: A022838 A329841 A047329 * A300730 A191777 A284590

Adjacent sequences:  A187682 A187683 A187684 * A187686 A187687 A187688

KEYWORD

nonn

AUTHOR

Clark Kimberling, Mar 12 2011

STATUS

approved

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Last modified July 8 17:40 EDT 2020. Contains 335524 sequences. (Running on oeis4.)