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OEIS sequence extensions from sequence internal_format

Source: R/OEIS_extensions.R
OEIS_extensions.Rd

This field is to claim credit for additions to the entry that can't be properly acknowledged in other fields. The most common use is to acknowledge more terms for sequences that had only a few previously.

Usage

OEIS_extensions(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 string with the OEIS sequence extensions lines or NULL if there are no extensions.

Note

OEIS Wiki: Style sheet for contributors

See also

Examples

if (FALSE) { # \dontrun{
# A008406: Triangle T(n,k) read by rows, giving number of graphs with n nodes
# (n >= 1) and k edges (0 <= k <= n(n-1)/2).
id <- "A008406"
internal_format <- OEIS_internal_format(id)
extensions <- OEIS_extensions(internal_format)
cat(extensions, sep = "\n")
} # }