Skip to contents

OEIS sequence creation date from data.frame

Source: R/OEIS_date.R
OEIS_date.Rd

Sequence creation date.

Usage

OEIS_date(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 Date object with the OEIS sequence creation date, or NA if no date is found.

Examples

if (FALSE) { # \dontrun{
id <- "A221863"
OEIS_date(id)
} # }