# OEIS

- **Website:** <https://oeis.org>
- **Primary alias:** `oeis.org`

## Description

Oeis, or the On-Line Encyclopedia of Integer Sequences®, is a comprehensive platform that provides users with a vast collection of mathematical sequences. It serves as a valuable resource for researchers, mathematicians, and enthusiasts alike. With over 364,602 sequences, Oeis enables users to enter a sequence, word, or sequence number to explore and discover information about it. Supported by the generous donors of the OEIS Foundation, this online encyclopedia offers a user-friendly interface in multiple languages, including English, Chinese, French, German, Italian, Japanese, and many more. Whether you're searching for a specific sequence or simply seeking inspiration, Oeis has you covered. Additionally, Oeis provides various tools and features to enhance your experience, such as video tutorials, a welcome page for further information, and even a webcam. The OEIS Community actively contributes to the site, ensuring its continuous growth and maintenance. Explore the fascinating world of numbers and sequences with Oeis, your go-to destination for all things mathematical.

## Industries

- 🧪 Science and Education
- 🧪 Math _(under Science and Education)_
- 🗺 Reference Materials
- 🗺 Dictionaries and Encyclopedias _(under Reference Materials)_

## Colors

| Name | Hex | Theme |
| --- | --- | --- |
| Blue | #0000ff | accent |
| Black | #000000 | dark |
| Portage | #8282f7 | light |

## Fonts

- Menlo — asset _(custom)_

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_Source: <https://brandfetch.com/oeis.org>_
_See [/llms.txt](/llms.txt) for a full list of agent-readable pages, and [/auth.md](/auth.md) for how agents authenticate._