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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A283926 Denominators of poly-Bernoulli numbers B_n^(k) with k=7. 2
1, 128, 279936, 5971968, 699840000000, 93312000000, 115269666624000000, 35129803161600000, 160060165655040000000, 1016255020032000000, 103970660613603049728000000, 240047701272387993600000, 41516393959179372527058885120000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Seiichi Manyama, Table of n, a(n) for n = 0..407

Wikipedia, Poly-Bernoulli number

EXAMPLE

B_0^(7) = 1, B_1^(7) = 1/128, B_2^(7) = -1931/279936, B_3^(7) = 32459/5971968, ...

MATHEMATICA

B[n_]:= Sum[((-1)^(m + n))*m!*StirlingS2[n, m] * (m + 1)^(-7), {m, 0, n}]; Table[Denominator[B[n]], {n, 0, 15}] (* Indranil Ghosh, Mar 18 2017 *)

PROG

(PARI) B(n) = sum(m=0, n, ((-1)^(m + n)) * m! * stirling(n, m, 2) * (m + 1)^(-7));

for(n=0, 15, print1(numerator(B(n)), ", ")) \\ Indranil Ghosh, Mar 18 2017

CROSSREFS

Cf. A027643-A027648, A283925.

Sequence in context: A220301 A016795 A222054 * A016831 A103348 A069446

Adjacent sequences:  A283923 A283924 A283925 * A283927 A283928 A283929

KEYWORD

nonn,frac

AUTHOR

Seiichi Manyama, Mar 18 2017

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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified February 19 16:28 EST 2018. Contains 299356 sequences. (Running on oeis4.)