🔢 OEIS Integer Sequences Scraper

🚀 Export integer sequences from the OEIS in seconds. Search 370,000+ sequences by A-number, keyword, or matching terms. Pull terms, formulas, references, authors, cross-references, and program code (Maple, Mathematica, Python, more).

The OEIS Integer Sequences Scraper taps the Online Encyclopedia of Integer Sequences, the canonical reference for integer sequences in mathematics. Maintained since 1964 by Neil Sloane and the OEIS Foundation, the database now indexes more than 370,000 sequences, each curated with terms, formulas, generating functions, references, code, and cross-links.

This Actor returns 22 structured fields per record, including the A-number, name, full numeric data, term array, offset, keywords, author, creation and revision dates, comments, references, links, formulas, examples, Maple and Mathematica snippets, multi-language program code, and cross-references to related sequences.

🎯 Target Audience	💡 Primary Use Cases
Mathematicians, ML feature engineers, programmers, combinatorialists, recreational math fans, educators, puzzle designers	Pattern recognition, sequence identification, code generation reference, OEIS-grounded LLM features, ML training data, problem-set curation

📋 What the OEIS Integer Sequences Scraper does

Flexible OEIS search syntax in a single Actor:

• 🔢 A-number lookup. id:A000045 returns Fibonacci.
• 📛 Keyword search. fibonacci, prime, partition, permutation.
• 🧮 Match by terms. Paste a comma-separated sequence (1,1,2,3,5,8) and OEIS finds matching entries.
• 🏷️ Filter by keywords. Combine with OEIS-curated tags like core, easy, nice, tabl, nonn.
• 🧑‍🔬 Author filter. author:Sloane narrows to entries by a specific contributor.

Each record includes the A-number, sequence values (string and parsed array), offset, OEIS keywords, author byline, creation and revision dates, prose comments, bibliographic references, hyperlinks, mathematical formulas, worked examples, Maple/Mathematica/program code, and cross-references to related A-numbers.

💡 Why it matters: OEIS is the de facto authority for "what sequence is this?" Building your own client means crawling HTML, parsing free-text fields, and handling Sloane's idiosyncratic flat-file format. This Actor delivers a tidy schema with terms already parsed into an array.

📊 Data fields

Each record includes: aNumber, author, comment, createdDate, data, example, formula, keywords, link, maple, mathematica, name, number, offset, program, reference, revisedDate, scrapedAt, terms, url, xref. These field names come straight from the actor's dataset schema, so what you see here is what lands in your dataset.

🚀 How to use

1. 📝 Sign up. Create a free account with $5 credit (takes 2 minutes).
2. 🌐 Open the Actor. Go to the OEIS Integer Sequences Scraper page on the Apify Store.
3. 🎯 Set input. Enter an A-number, keyword, or term list and optional keyword filters.
4. 🚀 Run it. Click Start and let the Actor collect your data.
5. 📥 Download. Grab your results in the Dataset tab as CSV, Excel, JSON, or XML.

⏱️ Total time from signup to downloaded dataset: 3-5 minutes. No coding required.

🔗 Recommended Actors

• 🔬 ArXiv Scraper - Preprint research papers in math and CS
• 📊 Figshare Scraper - Open research datasets
• 📚 PubMed Scraper - Biomedical literature
• 🧪 PubChem Compound Scraper - NIH chemical database
• 🌐 OSF Scraper - Open Science Framework registry

💡 Pro Tip: browse the complete ParseForge collection for more reference-data scrapers.

⚠️ Disclaimer: this Actor is an independent tool and is not affiliated with, endorsed by, or sponsored by the OEIS Foundation, Neil Sloane, or any editorial board member. All trademarks mentioned are the property of their respective owners. Only publicly available open data is collected.

🆘 Need Help?

If you hit a bug, have questions about setup, or need a scraper we haven't built yet, open our contact form or write to parseforge@protonmail.com. We also take on paid custom data projects.

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