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A187901 Rank transform of the sequence floor((3-sqrt(3))n); complement of A187902. 2
1, 3, 4, 7, 8, 9, 11, 14, 15, 17, 18, 20, 22, 23, 26, 27, 29, 30, 33, 34, 35, 37, 39, 41, 43, 44, 46, 48, 50, 52, 53, 55, 56, 58, 60, 62, 63, 65, 67, 68, 70, 72, 74, 75, 78, 79, 81, 82, 84, 86, 88, 89, 91, 93, 95, 97, 98, 100, 101, 104, 105, 106, 108, 110, 112, 114, 115, 117, 119, 120, 123, 124, 126, 127, 129, 131, 132, 134, 136, 138, 140, 141, 143 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

See A187224.

LINKS

Table of n, a(n) for n=1..83.

MATHEMATICA

r=3-3^(1/2);

seqA = Table[Floor[r*n], {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]] (*A187901*)

Complement[Range[Length[seqA]], limseqU]  (*A187902*)

(*by Peter J. C. Moses, Mar 15 2011*)

CROSSREFS

Cf. A187224, A187902.

Sequence in context: A296352 A192052 A187230 * A220487 A110133 A205647

Adjacent sequences:  A187898 A187899 A187900 * A187902 A187903 A187904

KEYWORD

nonn

AUTHOR

Clark Kimberling, Mar 15 2011

STATUS

approved

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Last modified September 21 21:32 EDT 2021. Contains 347605 sequences. (Running on oeis4.)