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 A238015 Denominator of (2*n+1)!*8*Bernoulli(2*n,1/2). 3
 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 2, 2, 4, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 2, 2, 4, 1, 1, 1, 2, 1, 2, 2, 4, 1, 2, 2, 4, 2, 4, 4, 8, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 2, 2, 4, 1, 1, 1, 2, 1, 2, 2, 4, 1, 2, 2, 4, 2, 4, 4, 8, 1, 1, 1, 2, 1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,16 COMMENTS It appears that a(n) is 1 for n in A095736, 2 for n in A014312, 4 for n in A014313, 8 for n in A023688, 16 for n in A023689, 32 for n in A023690, 64 for n in A023691. - Michel Marcus, Feb 18 2014 LINKS Robert Israel, Table of n, a(n) for n = 0..2000 EXAMPLE For n=15, (2*15+1)!*8*Bernoulli(2*15,1/2) = -79147239268966167007717425917182573906640625/2 so a(15) = 2. MAPLE seq(denom((2*n+1)!*8*bernoulli(2*n, 1/2)), n=0 .. 100); MATHEMATICA Table[Denominator[(2 n + 1)! 8 BernoulliB[2 n, 1/2]], {n, 0, 200}] (* Vincenzo Librandi, Feb 18 2014 *) CROSSREFS Cf. A033473. Sequence in context: A335078 A086597 A322320 * A257679 A056059 A158819 Adjacent sequences:  A238012 A238013 A238014 * A238016 A238017 A238018 KEYWORD nonn,frac AUTHOR Robert Israel, Feb 17 2014 STATUS approved

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Last modified August 10 00:47 EDT 2020. Contains 336359 sequences. (Running on oeis4.)