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Keywords
From OeisWiki
Keywords go in the Keywords field of an OEIS sequence entry. Keywords describe certain characteristics of a sequence and enable targeted searching.
Contents
Regular keywords (for permanent use)
Keyword  Description  Anumber (example)  

base  Sequence is dependent on base used.  A029976  
bref  Sequence is too short to do any analysis with.  A003135  
cofr  A continued fraction expansion of a number.  A001203  
cons  A decimal expansion of a number (occasionally some other base).  A000796  
core  A fundamental sequence.  A000012  
dead  An erroneous or duplicated sequence (the table contains a number of incorrect sequences that have appeared in the literature, with pointers to the correct versions).  A185444  
dumb  An unimportant sequence.  A085808  
easy  It is easy to produce terms of this sequence.  A008592  
eigen  An eigensequence: a fixed sequence for some transformation.  A000108  
fini  A confirmed (if not by definition, then by a proof) finite sequence.  A056757  
frac  Numerators or denominators of sequence of rational numbers.  A076512  
full  The full sequence is given (implies that the sequence is finite).  A003173  
hard  Next term is not known and may be hard to find. Would someone please extend this sequence?  A001220  
hear  This sequence has a graph audio deemed to be particularly interesting and/or beautiful.  A000045  
less  This is a less interesting sequence and is less likely to be the one you were looking for.  A144572  
look  This sequence has a graph visual deemed to be particularly interesting and/or beautiful.  A099302  
more  More terms are needed! Would someone please extend this sequence?  A005820  
mult  Multiplicative:

A184997  
nice  An exceptionally nice sequence.  A167408  
nonn  A sequence of nonnegative numbers (more precisely, all the displayed terms are nonnegative; it is not excluded that later terms in the sequence become negative).  A000290  
obsc  Obscure, better description needed.  A086267  
sign  Sequence contains negative numbers.  A100700  
tabf  An irregular (or funnyshaped) array of numbers made into a sequence by reading it row by row.  A027746  
tabl  A regular array of numbers, such as Pascal's triangle, made into a sequence by reading it row by row.  A034851  
unkn  The definition or context is not known; anyone who can find a definition, formula, or recurrence is urged to add it to the OEIS.  A058897  
walk  Counts walks or selfavoiding paths.  A052179  
word  Depends on words for the sequence in some language.  A001166 
Administrative keywords (for temporary use)
Keyword  Description 

allocated  The Anumber has been allocated for a contributor, the entry is not ready to go live yet. 
changed  An older entry that has been modified within the last two weeks. 
new  New (added or modified within last two weeks, roughly). 
probation  Included on a provisional basis, but may be deleted later at the discretion of the editor. 
recycled  A proposed entry was rejected and now the Anumber is available for another new entry. 
uned  Not edited. Sequences should be checked to see if: the sequence is worth including; the definition is sensible; the sequence is not already in the database; the English is correct; the different parts of the entry all have the correct prefixes: crossreferences are in %Y lines, formulae in %F lines, etc.; any %H lines are correctly formatted (this is easy to get wrong); etc. The keyword “uned” indicates that this sequence was not edited, usually because of time pressure. Perhaps someone could edit this sequence. 
New keywords
See: New keywords.
Suggestions for new keywords
See: Suggestions for new keywords.
Keywords currently in use
See: Keywords currently in use.
Deprecated keywords
See: Deprecated keywords.
See also
 Official description of the keywords
 Clearcut examples of keywords
 User:Charles R Greathouse IV/Keywords
Name · Data · Offset · Comments · References · Links · Formula · Example · Maple · Mathematica · Prog · Crossrefs · Keyword · Author · Extensions 