Template:OEIS

The following documentation is located at Template:OEIS/doc. [<Edit> Template:OEIS/doc]
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The {{OEIS}} interwiki link template gives an interwiki link to the http://oeis.org/search?q=first_parameter_string search results page. (To avoid an issue with A-numbers, the first character is converted to lower case.) Note that the OEIS search engine does Porter stemming, i.e. reduces inflected (or sometimes derived) words to their stem, base or root form.

Usage:

{{OEIS|search string}}

or

{{OEIS|search string|format = format}}

or

{{OEIS|search string|link label}}

or

{{OEIS|search string|link label|format = format}}

Parameters:

1. first parameter: search string (automatically URL encoded), where if search string contains A-numbers:

1. to search for any sequence containing A-number A​123456, use A​123456,
2. to search for the sequence with A-number A​123456, use id:A​123456, but only with format = text or format = json, otherwise use A​123456 which gives the automatic link A123456;

1. (optional) second parameter: link label string (first parameter used as default);
2. (optional) last [named] parameter: format: text (plain text) or json (JSON: JavaScript Object Notation)

Some hints for search string: (See OEIS search hints and advanced search syntax.)

• The search text is a list of space-separated search terms, as with popular web search engines.
• The search terms can be single numbers, sequences of numbers, single words or sequences of words.
• Sequences of numbers should be separated with commas (or spaces if the order doesn't matter).
• Word sequences should be enclosed in double quotes.
• You can separate search terms with | (no spaces around the |) and it means sequences that match either term.
  (WARNING: You need to use the {{!}} workaround template to produce the | pipe character in a template parameter!)

Examples:

{{OEIS|identity}} yields identity (searches for words with the stem ident)

{{OEIS|identical}} yields identical (searches for words with the stem ident)

{{OEIS|"identity"}} yields "identity" (unfortunately, still searches for words with the stem ident)

{{OEIS|"identity operator"}} yields "identity operator" (searches for two consecutive words with the stems ident and oper)

{{OEIS|Fibonacci}} yields Fibonacci

{{OEIS|Fibonacci|search for "Fibonacci" in OEIS}} yields search for "Fibonacci" in OEIS

{{OEIS|Fibonacci{{!}}Lucas}} yields Fibonacci|Lucas

{{OEIS|1,4,9,16,25,36,49,64,81,100}} yields 1,4,9,16,25,36,49,64,81,100

{{OEIS|"symmetric group"|search for "symmetric group"}} yields search for "symmetric group"

{{OEIS|2,3,6,16 "symmetric group" author:Stanley}} yields 2,3,6,16 "symmetric group" author:Stanley

{{OEIS|"twin primes" keyword:nice keyword:hard}} yields "twin primes" keyword:nice keyword:hard

{{OEIS|id:A​000045}} to get id:A000045 (just use A​000045 to get the automatic link A000045 instead) (only the sequence with A-number A000045)

{{OEIS|A001011|Search A001011 (TEXT)}} yields Search A001011 (TEXT)

Use A001011 (automatically linked) which is better than {{OEIS|id:A001011|A001011}} yielding A001011 (only the sequence with A-number A001011)

Examples: TEXT

{{OEIS|Fibonacci|format = text}} yields Fibonacci

{{OEIS|Fibonacci|Fibonacci (plain text)|format = text}} yields Fibonacci (plain text)

{{OEIS|A001011|format = text}} yields A001011

{{OEIS|A001011|Search A001011 (TEXT)|format = text}} yields Search A001011 (TEXT)

{{OEIS|id:A001011|Get A001011 (TEXT)|format = text}} yields Get A001011 (TEXT) (only the sequence with A-number A001011)

{{OEIS|id:A001011{{!}}id:A001015|Get A001011 and A001015 (TEXT)|format = text}} yields Get A001011 and A001015 (TEXT)  (only the sequences with A-numbers A001011 and A001015)  (note the use of the {{!}} [pipe] template)

Examples: JSON

{{OEIS|Fibonacci|format = json}} yields Fibonacci

{{OEIS|Fibonacci|Fibonacci (JSON)|format = json}} yields Fibonacci (JSON)

{{OEIS|A001011|format = json}} yields A001011

{{OEIS|A001011|Search A001011 (JSON)|format = json}} yields Search A001011 (JSON)

{{OEIS|id:A001011|Get A001011 (JSON)|format = json}} yields Get A001011 (JSON) (only the sequence with A-number A001011)

{{OEIS|id:A001011{{!}}id:A001015|Get A001011 and A001015 (JSON)|format = json}} yields Get A001011 and A001015 (JSON)  (only the sequences with A-numbers A001011 and A001015)  (note the use of the {{!}} [pipe] template)

See also:

• {{oeisf}} for an external link to a file or directory on oeisf.org.
• JSON Format, Compressed Files