login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A130412 Denominator of partial sums of a series for 3*(Pi-3). 3
2, 5, 140, 105, 2310, 15015, 120120, 85085, 9699690, 4849845, 446185740, 557732175, 3346393050, 48522699225, 24067258815600, 1504203675975, 3008407351950, 55655536011075, 222622144044300, 2281876976454075 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Numerators are given in A130411.

LINKS

Table of n, a(n) for n=1..20.

FORMULA

a(n)=denominator(r(n)) with the rationals r(n)defined in A130411.

CROSSREFS

Sequence in context: A236045 A183128 A145620 * A175525 A069139 A155762

Adjacent sequences:  A130409 A130410 A130411 * A130413 A130414 A130415

KEYWORD

nonn,frac,easy

AUTHOR

Wolfdieter Lang Jun 01 2007, Sep 09 2008

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified February 27 22:50 EST 2020. Contains 332319 sequences. (Running on oeis4.)