The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A187570 Rank transform of the sequence ceiling(n/3); complement of A187571. 3
 1, 2, 3, 5, 6, 7, 9, 10, 11, 13, 14, 15, 16, 17, 18, 20, 21, 22, 24, 25, 26, 28, 29, 30, 31, 32, 33, 35, 36, 37, 39, 40, 41, 43, 44, 45, 46, 47, 48, 50, 51, 52, 54, 55, 56, 58, 59, 60, 62, 63, 64, 66, 67, 68, 70, 71, 72, 73, 74, 75, 77, 78, 79, 81, 82, 83, 85, 86, 87, 88, 89, 90, 92, 93, 94, 96, 97, 98, 100, 101, 102, 103, 104, 105, 107, 108, 109, 111, 112, 113, 115, 116 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Appears to be a duplicate of A045749. - R. J. Mathar, Mar 15 2011 The Mathematica programs shown at A187570 and A045749 confirm equality of the first 500 terms. - Clark Kimberling, Apr 02 2011 The sequence of which A187570 is the rank transform is (1,1,1,2,2,2,3,3,3,4,4,4,...), which is (A002264 without the initial three zeros). For a discussion on rank transforms, see A187224. LINKS MATHEMATICA seqA = Table[Ceiling[n/3], {n, 1, 220}] (*A002264*) 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]] (*A187570*) Complement[Range[Length[seqA]], limseqU] (*A187571*) (*by Peter J. C. Moses, Mar 11 2011*) CROSSREFS Cf. A187224, A187571, A045749, A045750. Sequence in context: A171948 A287527 A045749 * A045671 A276341 A098572 Adjacent sequences: A187567 A187568 A187569 * A187571 A187572 A187573 KEYWORD nonn AUTHOR Clark Kimberling, Mar 11 2011 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified March 25 23:47 EDT 2023. Contains 361529 sequences. (Running on oeis4.)