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title: SLOANE(1) Sloane User Manual | Version 1.4 date: March 9, 2014

NAME

sloane - a command line interface to Sloane's On-Line Encyclopedia of Integer Sequences (OEIS) http://oeis.org

SYNOPSIS

sloane [options] search-terms

DESCRIPTION

The sloane command searches Sloane's On-Line Encyclopedia of Integer Sequences (OEIS). The search terms are typically the leading term of a sequence, but can be a sequence id (its A-number) or even arbitrary words.

OPTIONS

-k --keys=KEYS : Keys of fields to print (default: SN)

-a --all : Print all fields

-u --url : Only print urls of found entries

-n --limit=INT : Retrieve at most this many entries (default: 5)

-? --help : Display a short help message

-V --version : Print version information

EXAMPLES

The most common search is for entries matching a sequence of consecutive terms:

sloane 1,3,19,183,2371,38703

At the time of writing this particular query would return

S A006531 1,1,3,19,183,2371,38703,763099,17648823,468603091,14050842303,
N A006531 Semiorders on n elements.

As this illustrates, the default is to return just the sequence (S) and the name (N) fields. To override the default one can use the keys option. For instance, the following search shows the sequence, name, comments, and formula fields of the sequence whose A-number is A006531:

sloane -kSNCF id:A006531

The next example returns at most 3 results of a free text search:

sloane -n3 "(2+2)-free posets"

To view the full entries of these 3 results in a browser (e.g., firefox) one can use the url option:

firefox `sloane --url -n3 "(2+2)-free posets"`

KEYS

These are the keys used by OEIS http://oeis.org/eishelp2.html.

I  ID number

S  1st line of unsigned sequence
T  2nd line of unsigned sequence
U  3rd line of unsigned sequence

V  1st line of signed sequence
W  2nd line of signed sequence
X  3rd line of signed sequence

N  Name
C  Comments
D  References
H  Links
F  Formula
e  Examples

p  Maple program
t  Mathematica program
o  Program in other language

Y  Cross-references
K  Keywords
O  Offset
A  Author
E  Extensions and errors

NOTES

Please use this program with moderation as not to overburden the OEIS-server; see OEIS' policy on searching the database: http://oeis.org/wiki/Welcome#Policy_on_Searching_the_Database.

SEE ALSO

The sloane source code may be downloaded from https://github.com/akc/sloane.

AUTHOR

Anders Claesson