OEIS sequence linked cross references from sequence information data.frame

OEIS sequence linked cross references from sequence information data.frame

Usage

OEIS_cf(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 character vector with OEIS sequence linked cross references IDs.

See also

• OEIS_seqs_adjacent()

• OEIS_crossrefs()

• OEIS_xml()

• OEIS_df()

Examples

if (FALSE) { # \dontrun{
id <- "A240106"
seq_html <- OEIS_xml(id)
seq_df <- OEIS_df(seq_html)
OEIS_cf(seq_df)
} # }