login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A103346 Denominators of Sum_{k=1..n} 1/k^6 = Zeta(6,n). 6
1, 64, 46656, 2985984, 46656000000, 46656000000, 5489031744000000, 351298031616000000, 256096265048064000000, 51219253009612800000, 90738031080962661580800000, 90738031080962661580800000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

For the numerators and comments see A103345.

LINKS

Table of n, a(n) for n=1..12.

MATHEMATICA

s=0; lst={}; Do[s+=n^1/n^7; AppendTo[lst, Denominator[s]], {n, 3*4!}]; lst (* Vladimir Joseph Stephan Orlovsky, Jan 24 2009 *)

Table[ HarmonicNumber[n, 6] // Denominator, {n, 1, 12}] (* Jean-Fran├žois Alcover, Dec 04 2013 *)

CROSSREFS

Sequence in context: A283924 A016830 A249076 * A123394 A069445 A227604

Adjacent sequences:  A103343 A103344 A103345 * A103347 A103348 A103349

KEYWORD

nonn,frac,easy

AUTHOR

Wolfdieter Lang, Feb 15 2005

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 July 22 14:41 EDT 2019. Contains 325222 sequences. (Running on oeis4.)