Access sequences from the On-Line Encyclopedia of Integer Sequences (OEIS) directly from R
OEIS is one of the world's most valuable mathematical resources: thousands of integer sequences with formulas, comments, references, and code. It has contributed to mathematical discoveries and is cited in over 6000 articles. OEIS.R brings this data to R in a structured way, making it easy to visualize, analyze, and use in mathematical hypotheses or contributions to OEIS.
Full documentation and function reference: https://enriqueph.github.io/OEIS.R/
# install.packages("devtools") # if you don't have it
devtools::install_github("EnriquePH/OEIS.R")library(OEIS.R)
# Download the Fibonacci sequence (A000045)
fib <- OEIS_sequence("A000045")
# Basic info
OEIS_description(fib)
OEIS_formula(fib)
# Quick base R plot
plot(fib)library(ggplot2)
id <- "A001615"
x <- OEIS_sequence(id)
OEIS_ggplot(x) +
geom_line() +
geom_point(size = 0.5, color = "green") +
labs(title = paste("OEIS", id, "-", OEIS_description(x)))
Download and parsing of OEIS sequences (terms, description, formula, offset, etc.). Seamless integration with ggplot2 for visualization. Helper functions:
- OEIS_description()
- OEIS_formula()
- OEIS_keywords()
Respects OEIS terms of use (rate limiting recommended).
To cite the OEIS.R package itself:
citation("OEIS.R")(GitHub's "Cite this repository" button on this repo's page uses
CITATION.cff and gives the same citation in APA/BibTeX.)
To cite an individual OEIS sequence you've fetched (e.g. in a paper), use
OEIS_bibtex() instead:
x <- OEIS_sequence("A001615")
print(OEIS_bibtex(x), style = "Bibtex")Contributions are welcome! See CONTRIBUTING.md for how to set up a development environment, run the test suite, and submit pull requests.
Enrique Pérez Herrero
- GitHub: @EnriquePH
- LinkedIn: eph3000
Built with RStudio • Licensed under the MIT License