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A187691 Rank transform of the sequence ceiling(3n/4); complement of A187692. 2
1, 3, 4, 5, 7, 9, 11, 12, 13, 15, 16, 17, 19, 20, 22, 23, 25, 27, 28, 29, 31, 33, 35, 36, 37, 39, 41, 42, 43, 45, 47, 48, 49, 51, 52, 53, 55, 57, 59, 60, 61, 63, 64, 65, 67, 68, 70, 71, 73, 75, 76, 77, 79, 80, 82, 83, 85, 87, 88, 89, 91, 92, 94, 95, 97, 99, 100, 101, 103, 105, 107, 108, 109, 111, 112, 113, 115, 116, 118, 119, 121, 123, 124, 125, 127, 129, 131, 132, 133, 135, 137, 138, 139 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

See A187224.

LINKS

Table of n, a(n) for n=1..93.

MATHEMATICA

seqA = Table[Ceiling[3n/4], {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]] (*A187691*)

Complement[Range[Length[seqA]], limseqU]  (*A187692*)

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

CROSSREFS

Cf. A187224, A187692.

Sequence in context: A282808 A260401 A003159 * A141259 A047501 A256455

Adjacent sequences:  A187688 A187689 A187690 * A187692 A187693 A187694

KEYWORD

nonn

AUTHOR

Clark Kimberling, Mar 12 2011

STATUS

approved

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Last modified April 4 07:32 EDT 2020. Contains 333213 sequences. (Running on oeis4.)