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This page contains notes about the status of the OEIS wiki. It provides a brief description of the wiki setup. It will also be used to announce changes in the structure of the wiki, so it may be useful to add it to your watchlist by clicking on the watch tab at the top of the page.

Users can create and modify discussion pages here. The discussion pages are a reasonable place to make comments about the structure of the wiki.

Do not use the discussion pages to suggest changes to OEIS sequence entries.

An account is necessary to contribute to the Wiki. To request an account, click here. There was a time when the username was required to be your Real Name. This is no longer required, but is strongly recommended. If this evolving statement causes you to want to change your username, send email to David, and I can make the change.

A few preliminary pages (most of these need to be updated!)


Sequence of the Day for September 21

A115020: Count backwards from 100 in steps of 7.

{ 100, 93, 86, 79, 72, 65, 58, 51, 44, 37, 30, 23, 16, 9, 2 }

This sequence is sometimes used to gauge the concentration ability of a patient with Alzheimer's disease. The arithmetic is simple, but if short-term memory and concentration are compromised, a mistake is likely to occur at some point. Other decrements can be used for this purpose, with the alternative step preferably having no factor in common with 100.

Today is Alzheimer's Awareness Day.

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