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Deleted sequences

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  • Sequences are occasionally removed from the OEIS and their A-numbers recycled.
  • Remember that if you delete a sequence, you must also delete (or update) all references to it in other entries—first do a search for the A-number in oeis.org, then here in the OEIS wiki (in case there are references to it in the wiki pages).
  • If the deleted sequence had a b-file, that must be deleted also, or it will cause problems when the A-number is recycled. To delete a b-file, contact David Applegate, Russ Cox, Charles R Greathouse IV, or N. J. A. Sloane.
  • Sequences that have been in the OEIS for a long time (even if they already have keyword "dead") should not be deleted. If they are incorrect or duplicates they can be given the keyword "dead".

Contents

Reasons for deletion

There are several reasons why a sequence may be deleted from the OEIS. Typically, this happens if the sequence is:

  • a duplicate of a sequence already in the OEIS,
  • an erroneous version of a sequence already in the OEIS,
  • ill-defined (e.g. eventually some term has multiple or ambiguous values, or the sequence is time-dependent),
  • withdrawn by the author,
  • does not contain enough terms (usually we need at least four terms),
  • too artificial or contrived,
  • not of general interest (NOGI),
  • contains unacceptable language,
  • a new submission which has been on the Sequences awaiting review (Proposed drafts or Pending changes) list for over three months. (This usually happens when the author does not respond to the editors' questions.)

Some advice

To ensure that your sequence is not deleted:

  • Be very careful when calculating the sequence;
  • Give a precise definition;
  • Check that the sequence (even without the initial terms) is not already in the OEIS;
  • Write in correct English;
  • Include a comment saying why the sequence is interesting;
  • Give an example;
  • Say how you computed the sequence;
  • Give a computer program.

List of deleted sequences

This is a list of sequences which have been deleted, starting from the most recent.

  • "rifo" means "retired in favor of" (in other words, "the latter sequence is preferable").
  • "NOGI" means "Rejected because not of general interest".

One can use either a simple dash or hyphen (-) or an — (—) before a signature.

Jan 2017

  • A281352 (Sloane) rifo A269722 - N. J. A. Sloane 14:34, 22 January 2017 (UTC)
  • A281252 (Lava) duplicate of A069871. - R. J. Mathar, Jan 22 2017
  • A281424 (Nicolas Bègue) duplicate of A019673 — Editors, Jan 21 2017
  • A281301, A281302, A281303 (Hellström) too artificial - Editors, Jan 21 2017
  • A281090 (Peter M. Chema) NOGI — Editors, Jan 20 2017
  • A281091 (Bobby Jacobs) NOGI - Joerg Arndt, Michael De Vlieger, Alois P. Heinz, and Charles R Greathouse IV, Jan 19 2017
  • A281090 (Bobby Jacobs) NOGI - Joerg Arndt, Omar E. Pol, Jon E. Schoenfield, and Charles R Greathouse IV, Jan 19 2017
  • A280914 (Bajpai) depends on arbitrary but large parameter, NOGI - Editors, Jan 18 2017
  • A280995 (Cicuttin) not well defined. - N. J. A. Sloane 03:44, 19 January 2017 (UTC)
  • A280818 (Maverick K. Morrison) duplicate of A000005 — Editors, Jan 17 2017
  • A280165 (Bhatkar) more errors than lines - Editors, Jan 17 2017
  • A279904 (J. Chen) rifo A118088 - Editors, Jan 17 2017
  • A279260 (Ziemak) rifo A000040 - Editors, Jan 17 2017
  • A280099 (Quan Nguyen Minh) rifo A006190 - Editors, Jan 17 2017
  • A279051 (Licht) rifo A027480 - Editors, Jan 17 2017
  • A280847 (David James Sycamore) NOGI and duplicate of rejected A280848 — Editors, Jan 17 2017
  • A280892 (K. D. Bajpai and Robert G. Wilson v) rifo A095018 - Editors, Jan 16 2017
  • A281088 (Bobby Jacobs) duplicate of A279795 — Editors, Jan 14 2017
  • A280723 (Curtz) withdrawn - Editors, Jan 14 2017
  • A281066, A280993 (Ralf Steiner) rejected before and re-proposed, NOGI — Editors, Jan 14 2017
  • A280992, A280993 (Ralf Steiner) definition remains obscure after numerous requests for greater clarity; also NOGI - N. J. A. Sloane 02:16, 14 January 2017 (UTC)
  • A280989 (Canu) NOGI - Editors, Jan 12 2017
  • A280739 (Sloane) withdrawn - N. J. A. Sloane 23:42, 12 January 2017 (UTC)
  • A278708 (Gordon Elliot Michaels) withdrawn - Joerg Arndt 12:47, 11 January 2017 (UTC)
  • A280723 (Pfoertner) not based on solid data - N. J. A. Sloane 08:01, 11 January 2017 (UTC)
  • A280588 (Lagneau) NOGI - Editors, Jan 10 2017
  • A280848 (David James Sycamore) NOGI — Editors, Jan 09 2017
  • A280722 (José de Jesús Camacho Medina) NOGI - Editors, Jan 08 2017
  • A280407 (Curtz) NOGI - Editors, Jan 06 2017
  • A279885, A280211 (Bhatkar) rifo A101986, A002623 - Editors, Jan 06 2017
  • A280547 (Frohlich) NOGI - Editors, Jan 06 2017
  • A279050 (Reece Wood) NOGI — Editors, Jan 05 2017
  • A280556 (Bobby Jacobs) NOGI — Editors, Jan 05 2017
  • A280357 and A280365 (Bobby Jacobs) NOGI - N. J. A. Sloane 12:42, 4 January 2017 (UTC)
  • A278637 (Bobby Jacobs) NOGI - Editors, Jan 04 2017
  • A279229 (Shevelev) rifo A100966 - Editors, Jan 04 2017
  • A280060, A280062 (Ghosh) duplicates of A181773 and A000330. - R. J. Mathar 12:18, 4 January 2017 (UTC)
  • A279725 (Hurt) duplicate of A187619. - R. J. Mathar 12:02, 4 January 2017 (UTC)
  • A280444 (Johannes W. Meijer) withdrawn — Editors, Jan 03 2017
  • A280305 (Gerasimov) too short - N. J. A. Sloane 07:51, 3 January 2017 (UTC)
  • A280050 (Sloane) when corrected is A003159 - N. J. A. Sloane 14:15, 2 January 2017 (UTC)
  • A280389 (M. Campbell) too contrived - Editors, Jan 02 2017
  • A276112 (Richard R. Forberg) Abandoned — Editors, Jan 02 2017
  • A277636 (Pietro Tiaraju Giavarina dos Santos) NOGI — Editors, Jan 02 2017
  • A280321 (Curtz) NOGI - Editors, Jan 01 2017

List of deleted sequences in 2016

Dec 2016

Nov 2016

Oct 2016

Sep 2016

Aug 2016

July 2016

June 2016

May 2016

Apr 2016

March 2016

February 2016

January 2016

Older entries

See also

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