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

 

Logo

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A051721 Denominators of column 3 of table described in A051714/A051715. 4
4, 5, 15, 35, 105, 105, 105, 165, 165, 455, 15015, 1365, 1365, 255, 255, 11305, 33915, 21945, 21945, 345, 3795, 10465, 31395, 1365, 1365, 435, 435, 346115, 1038345, 55335, 608685, 255, 255, 319865, 959595, 959595, 959595, 6765, 6765, 61705 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Seiichi Manyama, Table of n, a(n) for n = 0..1000

M. Kaneko, The Akiyama-Tanigawa algorithm for Bernoulli numbers, J. Integer Sequences, 3 (2000), #00.2.9.

MATHEMATICA

a[0, k_] := 1/(k+1); a[n_, k_] := a[n, k] = (k+1)*(a[n-1, k] - a[n-1, k+1]); a[n_] := a[n, 3] // Denominator; Table[a[n], {n, 0, 39}] (* Jean-Fran├žois Alcover, Sep 17 2012 *)

CROSSREFS

Cf. A051720.

Sequence in context: A006491 A321174 A304921 * A050226 A119562 A289021

Adjacent sequences:  A051718 A051719 A051720 * A051722 A051723 A051724

KEYWORD

nonn,easy,nice

AUTHOR

N. J. A. Sloane

EXTENSIONS

More terms from James A. Sellers, Dec 08 1999

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 January 19 03:54 EST 2020. Contains 331031 sequences. (Running on oeis4.)