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A046878
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Numerator of 1/n Sum[ 1/BinomialCoefficient[ n-1,k ], {k,0,n-1} ]
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6
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0, 1, 1, 5, 2, 8, 13, 151, 32, 83, 73, 1433, 647, 15341, 28211, 10447, 1216, 19345, 18181, 651745, 1542158, 1463914, 2786599, 122289917, 29229544, 140001721, 134354573, 774885169, 745984697, 41711914513, 80530073893, 4825521853483
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,4
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COMMENTS
| a(n) is also the numerator of (1/2^n)*Sum(2^k/k,k=1..n) [From Groux Roland (roland.groux(AT)orange.fr), Jan 13 2009]
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LINKS
| T. D. Noe, Table of n, a(n) for n=0..200
Eric Weisstein's World of Mathematics, Leibniz Harmonic Triangle
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EXAMPLE
| 0, 1, 1, 5/6, 2/3, 8/15, 13/30, 151/420, 32/105,...
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CROSSREFS
| See A046825, the main entry for this sequence. Cf. A046879.
Sequence in context: A187876 A179951 A198192 * A078335 A021658 A021193
Adjacent sequences: A046875 A046876 A046877 * A046879 A046880 A046881
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KEYWORD
| nonn,frac,easy,nice
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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