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A060055
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Denominators of nonzero numbers appearing in the Euler-Maclaurin summation formula. (See A060054 for the definition of these numbers).
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2
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2, 12, 720, 30240, 1209600, 47900160, 1307674368000, 74724249600, 10670622842880000, 5109094217170944000, 802857662698291200000, 14101100039391805440000, 1693824136731743669452800000
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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REFERENCES
| M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards Applied Math. Series 55, Tenth Printing, 1972, p. 16 (3.6.28), p. 806 (23.1.30), p. 886 (25.4.7).
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LINKS
| M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards, Applied Math. Series 55, Tenth Printing, 1972 [alternative scanned copy].
M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards Applied Math. Series 55, Tenth Printing, 1972, p. 16 (3.6.28), p. 806 (23.1.30), p. 886 (25.4.7).
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FORMULA
| Denominators of nonzero coefficients in the series expansion around zero of cot(x/2)/2, disregarding the first term. - Fredrik Johansson (fredrik.johansson(AT)gmail.com), Aug 20 2006
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MATHEMATICA
| f[n_] := Denominator[ -(-1)^n*BernoulliB[2n]/(2n)! ]; Table[ f[n], {n, 12}] (from Robert G. Wilson v Sep 02 2004)
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CROSSREFS
| Numerators give A060054.
Sequence in context: A052129 A173104 A141770 * A061149 A191555 A129933
Adjacent sequences: A060052 A060053 A060054 * A060056 A060057 A060058
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KEYWORD
| nonn,frac,easy
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AUTHOR
| Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de), Feb 16 2001
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