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A141590 a(n) = numerator of Bernoulli(2*n)/(2*n + 1)!. Bisection of A120082. 9
1, 1, -1, 1, -1, 1, -691, 1, -3617, 43867, -174611, 77683, -236364091, 657931, -3392780147, 1723168255201, -7709321041217, 151628697551, -26315271553053477373, 154210205991661, -261082718496449122051, 1520097643918070802691, -2530297234481911294093 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,7
COMMENTS
Numerators of the Taylor expansion coefficients of the Debye function D(1,x) at the even powers of x.
LINKS
Kevin Acres, David Broadhurst, Eta quotients and Rademacher sums, arXiv:1810.07478 [math.NT], 2018.
FORMULA
a(n) = A120082(2*n).
EXAMPLE
Note that a(34) = -125235502160125163977598011460214000388469 but A255505(34) = -4633713579924631067171126424027918014373353.
MAPLE
A141590 := proc(n) A120082(2*n) end:
seq(A141590(n), n=0..30) ; # R. J. Mathar, Sep 03 2009
seq(numer(bernoulli(2*n)/(2*n+1)!), n=0..34); # Peter Luschny, Dec 03 2022
CROSSREFS
Sequence in context: A046968 A255505 A001067 * A276594 A283301 A046988
KEYWORD
sign,frac
AUTHOR
Paul Curtz, Aug 20 2008
EXTENSIONS
Edited and extended by R. J. Mathar, Sep 03 2009
Edited by Peter Luschny, Dec 03 2022
STATUS
approved

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Last modified August 18 13:06 EDT 2024. Contains 375269 sequences. (Running on oeis4.)