Package index • OEIS.R

Fetch a sequence

Validate an ID and download a complete sequence entry.

OEIS_check(): OEIS ID Validation
OEIS_ID(): OEIS sequence authors from internal format, or from the sequence ID.
OEIS_sequence(): S3 class constructor for OEIS_sequence

Read individual fields from a sequence ID, its parsed internal format, or an already-built OEIS_sequence object.

OEIS_description(): Get OEIS sequence description
OEIS_terms(): Get OEIS sequence terms from XML document.
OEIS_offset(): OEIS sequence offset from xml2 data.
OEIS_comments(): OEIS sequence comments lines from sequence internal_format
OEIS_links(): Links from sequence data
OEIS_example(): OEIS sequence example lines from sequence internal_format
OEIS_formula(): OEIS sequence formula lines from sequence internal_format
OEIS_mathematica(): OEIS Wolfram Mathematica code from sequence internal_format
OEIS_keywords(): OEIS sequence keywords from sequence internal_format
OEIS_author(): OEIS sequence authors from internal format, or from the sequence ID.
OEIS_date(): OEIS sequence creation date from data.frame
OEIS_extensions(): OEIS sequence extensions from sequence internal_format
OEIS_formerly(): Get OEIS sequence former ID
OEIS_status(): Get OEIS sequence status

Sequences referenced by, in context with, or adjacent to a sequence.

OEIS_crossrefs(): OEIS Cross references
OEIS_cf(): OEIS sequence linked cross references from sequence information data.frame
OEIS_seqs_in_context(): OEIS Sequences in context from from XML document
OEIS_seqs_adjacent(): OEIS Adjacent sequences from XML document

OEIS sequences show a limited number of terms; b-files provide many more.

URLs and raw document/format accessors used internally by the higher-level functions above.

OEIS_url(): Get sequence url in the OEIS server
OEIS_web_url(): OEIS server main web page url
OEIS_search_url(): Find url to search in OEIS a given text
OEIS_xml(): Retrieves content from OEIS web as an XML document
OEIS_df(): Get OEIS sequence information lines from XML document data
OEIS_internal_format(): Get sequence internal format
OEIS_total_sequences(): Retrieve the total number of sequences in the OEIS database