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Template:Sequence of the Day

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Sequence of the Day for February 22

A008604: Multiples of
{ 22, 44, 66, 88, 110, 132, 154, ... }
An even number that is divisible by
is obviously divisible by
. (In base
, a number is divisible by
if and only if the sum of "digits" in base
is divisible by
, e.g.
1 + 10 = 11, 1 + 32 = 33, 1 + 54 = 55, ..., 2 + 14 + 94 = 110
implies that
110, 132, 154, ..., 21494
are divisible by

The following is in the <noinclude> ... </noinclude> section.

For more details about today's Sequence of the Day, see {{Sequence of the Day for February 22}}.

Guidelines for selecting the Sequence of the Day

  • These are not rules. But if they were rules, they would only be enforced by the honor system.
  • Whenever practical, the Sequence of the Day should bear some relation either to the calendar date (hint: browse arXiv e-prints by date) or to some recent newsworthy event.
  • The write-up should be brief and not require advanced mathematical knowledge to understand.
  • Positive preference given to sequences with keyword:nice.
  • No special preference for sequences with keyword:core.
  • Negative preference for sequences with keyword:uned or keyword:less. However, it is perfectly acceptable to polish up an uned sequence just prior to featuring.
  • Each OEIS contributor should get at least one opportunity to choose the Sequence of the Day.
  • The chooser ought not choose a sequence they have authored. But one they have edited heavily is perfectly acceptable.
  • Ideally this will be changed each day at 0:00 per the OEIS Wiki clock. Each Sequence of the Day should be up for at least 22 hours but not more than 26 hours.
  • There shouldn't be a big, heavy, bureaucratic apparatus to administer this feature.