Get OEIS sequence description

Sequence description gives a brief definition of the sequence. In the description, a(n) usually denotes the n-th term of the sequence, and n is a typical subscript. In some cases however n denotes a typical term in the sequence.

Usage

OEIS_description(x)

Arguments

x

Can be one of the following:

• A character string with sequence ID.

• A OEIS_internal S3 class object, with sequence internal format.

• A S3 classes object OEIS_xml and xml_document, with sequence content from OEIS web.

• An object of OEIS_sequence class, that contains all sequence related data.

Value

A string with the OEIS sequence description.

See also

• OEIS_internal_format()

• OEIS_sequence()

• OEIS_xml()

• OEIS_check()

Examples

if (FALSE) { # \dontrun{
# Sequence description from ID
id <- "A000056"
OEIS_description(id)

# Alternate example using internal format
id <- "A003400"
internal_format <- OEIS_internal_format(id)
OEIS_description(internal_format)

# Sequence description from "OEIS_sequence" class
 id <- "A002315"
 seq <- OEIS_sequence(id)
 OEIS_description(seq)
} # }