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User:Charles R Greathouse IV
From OeisWiki
Editor-in-Chief, interested primarily in computational number theory and allied fields.
I can be contacted via my Talk page here, or by email.
| User:Charles R Greathouse IV/Averages | Early draft of an article. |
| User:Charles R Greathouse IV/Chase sequences | 'Chase sequences': Axxxxxx refers to Ayyyyyy, which refers to Azzzzzz... |
| User:Charles R Greathouse IV/Favorites | Some of my favorite sequences. |
| User:Charles R Greathouse IV/Format | Discusses the correct format of b-files and how to repair ill-formatted b-files. |
| User:Charles R Greathouse IV/Junk | Disreputable publishers, journals, etc. |
| User:Charles R Greathouse IV/Keywords | Information on keywords: when to use them, new ones to add, etc. |
| User:Charles R Greathouse IV/Metadata | Plans for OEIS metadata: keywords, categories, the index, etc. |
| User:Charles R Greathouse IV/Pari | Some PARI/GP tools. |
| User:Charles R Greathouse IV/Programs | Programs in the OEIS: types, format, etc. |
| User:Charles R Greathouse IV/Projects | Other mathematical databases, fingerprint databases, and similar projects |
| User:Charles R Greathouse IV/Properties | Sequence properties and classes |
| User:Charles R Greathouse IV/Rule of thumb | Sequences should take 1 hour to prepare for submission. |
| User:Charles R Greathouse IV/Standards | How to write up certain kinds of sequences. |
| User:Charles R Greathouse IV/Tables of special primes | Types of primes and their densities |
| User:Charles R Greathouse IV/To do | Sequences to work on and b-files to fix. |
| User:Charles R Greathouse IV/Vanity | Sequences named after their discoverer. |
| User:Charles R Greathouse IV/Wiki | Tools for the OEIS wiki. |
Projects:
Useful links:
- Features Wishlist, User:Russ Cox/OEIS Server Features, Suggested Projects
- Deleted sequences (most recent month)
- Suggested pre-submit checklist
- Requested articles
- Editing history: sequence, wiki
- References on proof attempts: P vs. NP, Riemann hypothesis
- Resources: TME-EMT
| Sequence of the Day |
[talk]
Sequence of the Day for April 25
A180251: Decimal expansion of
|
- 3.14164078649987...
| π |
Sequences in the News
- Aug 17 2021 Swiss scientists announce they have calculated π (A000796) to 62.8 trillion digits in only 108 days.
- Dec 25 2018 German Heise-News "integers, please" column explains A003173 and OEIS.
- Feb 01 2018 Alphabet announced a $8,589,869,056 = $A000396(6) stock buyback.
- Jan 03 2018 Largest known term of A000043 announced: 77232917.
- Nov 18 2016 PrimeGrid proves that 10223 is not a Sierpinski number, since 10223 × 2 31172165 + 1 is prime. So no changes to A076336 for now.
- Sep 14 2016 Tom Greer discovers the twin primes 2996863034895 × 2 1290000 ± 1 using PrimeGrid, TwinGen and LLR.
- Jan 19 2016 Largest known term of A000043 announced: 74207281, also discovered by Curtis Cooper.
Complaints
I strive to live up to the highest ethical standards. If you feel that I have wrongly rejected one of your sequences (or otherwise failed to meet the expected standards), please leave a note at Complaints About Editing where it will be reviewed. I hope that in all cases you will first contact me (through the pink comment boxes, on my user page, or by email).
