OEIS Adjacent sequences from XML document

Adjacent sequences IDs in OEIS. These are the three sequences whose A-numbers are immediately before and after the A-number of the sequence.

Usage

OEIS_seqs_adjacent(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 OEIS sequences in context IDs

See also

OEIS_seqs_in_context()

OEIS_crossrefs()

OEIS_cf()

OEIS_xml()

Examples

if (FALSE) { # \dontrun{
id <- "A000112"
seq_html <- OEIS_xml(id)
OEIS_seqs_adjacent(seq_html)
} # }