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A157780 Denominator of Bernoulli(n, 1/2). 6
1, 1, 12, 1, 240, 1, 1344, 1, 3840, 1, 33792, 1, 5591040, 1, 49152, 1, 16711680, 1, 104595456, 1, 173015040, 1, 289406976, 1, 22900899840, 1, 201326592, 1, 116769423360, 1, 7689065201664, 1, 1095216660480, 1, 51539607552, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

Included for completeness, A033469 is the official version of this sequence.

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..250

MATHEMATICA

Table[Denominator[BernoulliB[n, 1/2]], {n, 0, 50}] (* Vincenzo Librandi, Mar 19 2014 *)

CROSSREFS

For numerators see A157779.

Sequence in context: A347492 A038327 A225750 * A223514 A232627 A222582

Adjacent sequences:  A157777 A157778 A157779 * A157781 A157782 A157783

KEYWORD

nonn,frac

AUTHOR

N. J. A. Sloane, Nov 08 2009

STATUS

approved

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Last modified January 20 13:55 EST 2022. Contains 350472 sequences. (Running on oeis4.)