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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, 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".


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  • withdrawn by the author,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.

Sep 2017

  • A292420, A292421, A292422 (Bobby Jacobs) NOGI - Editors, Sep 16 2017
  • A292301 (Vincenzo Librandi) NOGI — Editors, Sep 15 2017
  • A291049 (Natalie Nuessle) NOGI — Editors, Sep 15 2017
  • A292282 (Alois P. Heinz) rifo corrected A114916 — Editors, Sep 14 2017
  • A292284 (Marc Morgenegg) NOGI — Editors, Sep 14 2017
  • A290949 (J. Schwartz) rifo A197125 - Editors, Sep 14 2017
  • A289992, A289993 (Gerasimov) incorrect terms - Editors, Sep 13 2017
  • A291858 (Gerasimov) NOGI - N. J. A. Sloane 15:16, 13 September 2017 (UTC)
  • A291854 (Okoh) already rejected twice - N. J. A. Sloane 15:09, 13 September 2017 (UTC)
  • A284039 (Giuseppe Coppoletta) NOGI — Editors, Sep 13 2017
  • A292078 (Bobby Jacobs) NOGI - N. J. A. Sloane 01:41, 13 September 2017 (UTC)
  • A289188, A292185 (Vincenzo Librandi) NOGI — Editors, Sep 12 2017
  • A292068, A292072-A292082 (Robert Price), lists of primes, retired in favor of the sequences giving the corresponding indices. - N. J. A. Sloane 00:27, 12 September 2017 (UTC)
  • A292046 (Eldar) depends on large random constant. - N. J. A. Sloane 00:04, 12 September 2017 (UTC)
  • A291633 (R. G. Wilson v) uses leading zeros. - Editors, Sep 11 2017
  • A285054 (Chad Brewbaker) unclear definition, abandoned — Editors, Sep 10 2017
  • A292135 (Bobby Jacobs) rifo A002283 — Editors, Sep 09 2017
  • A292005 (Bobby Jacobs) NOGI - Joerg Arndt, Alois P. Heinz, Charles R Greathouse IV 19:05, 7 September 2017 (UTC)
  • A291827 (Pingya) duplicate of A003369. - R. J. Mathar 09:43, 7 September 2017 (UTC)
  • A291879 (Seiichi Manyama) duplicate — Editors, Sep 05 2017
  • A291172 (Felix Frohlich) NOGI - N. J. A. Sloane 02:12, 4 September 2017 (UTC)
  • A289716 (Bobby Jacobs) NOGI — Editors, Sep 02 2017
  • A289629, A290531 (Jan V. L. A. Hurdalek) NOGI — Editors, Sep 02 2017
  • A290937 (Trevor McGuire) withdrawn, duplicate of A059893 — Editors, Sep 02 2017
  • A290819 (Miquel Cerda) NOGI — Editors, Sep 02 2017
  • A290722, A290571, A290722 (Juri-Stepan Gerasimov) NOGI, still incorrect after many edits, recycled as a waste of editors' time - Joerg Arndt 16:45, 2 September 2017 (UTC)
  • A291371, A291372 (Okoh A. Desmond) NOGI (both identical) — Editors, Sep 02 2017
  • A289469 (Jake Saville) NOGI, incorrect, abandoned — Editors, Sep 02 2017
  • A290816 (Moses A. Mbah) NOGI — Editors, Sep 02 2017
  • A289055 (Paul S. Vanderveen) NOGI, many errors — Editors, Sep 02 2017
  • A287329, A287330, A287944 (Vincenzo Librandi) NOGI — Editors, Sep 01 2017
  • A290129 (Sébastien Desbordes) NOGI - Editors, Sep 01 2017

Aug 2017

Jul 2017

Jun 2017

May 2017

Apr 2017

Mar 2017

Feb 2017

Jan 2017

Older entries

See also

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