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A002689
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Denominators of coefficients for repeated integration.
(Formerly M4072 N1687)
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4
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2, 6, 8, 180, 32, 10080, 3456, 453600, 115200, 47900160, 71680, 217945728000, 36578304000, 2241727488000, 45984153600, 2000741783040000, 918421504, 43667471941632000, 5751865147392000, 240857298809487360000
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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REFERENCES
| H. E. Salzer, Table of coefficients for repeated integration with differences, Phil. Mag., 38 (1947), 331-336.
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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FORMULA
| A002207(n)/(n+1).
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MAPLE
| seq(denom(int(mul(p-i, i=0..(n-1)), p=0..1)/(n-1)!), n=1..30);
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CROSSREFS
| Sequence in context: A002176 A124675 A120709 * A174727 A046728 A110984
Adjacent sequences: A002686 A002687 A002688 * A002690 A002691 A002692
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KEYWORD
| nonn,frac
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
| Corrected and edited by Herman Jamke (hermanjamke(AT)fastmail.fm), Aug 01 2010
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