User:M. F. Hasler/Proposal for MainPage

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OEIS Reader's Guide The main OEIS page is http://oeis.org. Use that page for looking up a sequence, searching the database, contributing new sequences, editing sequences, etc. Welcome to OEIS Index to OEIS. Index to fractions in OEIS. Questions and Answers Page For New OEIS Questions and Answers Page for OEIS License Agreements Instructions For General Users Works Citing OEIS Suggested Projects Editorial Board More Pages OEIS: The MOVIE The OEIS is owned, maintained and supported by The OEIS Foundation Inc. - please give generously! Contributor's Guide Register (so that you can submit sequences or suggest changes). Trouble registering, logging in, changing password Style Sheet for OEIS (under construction) Things to do on the OEIS Editor's Guide Registered Users Instructions For Associate Editors Instructions For Editors-in-Chief Recent additions to OEIS Deleted Sequences Complaints About Editing Selected Recent Additions A239797 Decimal expansion of ${\frac {\sqrt {3}}{\sqrt[{3}]{4}}}$. A238271 Decimal expansion of $\sum _{n=1}^{\infty }{\frac {\mu (n)}{3^{n}}}$. A237042 UPC check digits. A236603 Lowest canonical Gray cycles of length $2n$. A235365 Smallest odd prime factor of $3^{n}+1$. A234522 Decimal expansion of ${\sqrt[{4}]{7}}-{\sqrt[{4}]{5}}$. A233748 Number of graphs on n vertices with edges colored with at most four interchangeable colors under the symmetries of the full edge permutation group. A232499 Number of unit squares, aligned with a Cartesian grid, completely within the first quadrant of a circle centered at the origin ordered by increasing radius. A231963 Concatenate $n$ with its UPC check digit. A230624 Numbers $n$ with property that for every base $b\geq 2$, there is a number $m$ such that $m+s(m)=n$, where $s(m)$ is the sum of digits in the base $b$ expansion of $m$.

Sequence of the Day [talk] Sequence of the Day for March 4 A179591: Decimal expansion of the surface area of a pentagonal cupola with edge length 1. 16.579749752988... The pentagonal cupola is the fifth of the Johnson solids. It has 15 vertices, 25 edges and 12 faces (5 triangles, 5 squares, 1 pentagon, 1 decagon). The formula for its surface area is rather involved compared to the formulas for its volume and circumradius. Featured article (Check back later for today's.) OEIS lookup <form action="http://oeis.org/search" method="get"><input type="submit" value="Search" name="go"><input maxLength="1024" size="55" dir="LTR" name="q" value="" title="Search Query"> <a href="http://oeis.org/hints.html">(hints)</a></form> (This is a trial template:OEIS lookup -- as you can see, it does not work. Request for a convenient wiki extension (such as http://www.mediawiki.org/wiki/Extension:InputBox) is under way... On this day... March 4, 1822 Jules Antoine Lissajous is born in Versailles. March 4, 1918 George Lidstone is elected a Fellow of the Royal Society of Edinburgh. Sequences in the news 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.

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