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Search: id:A102720
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| A102720 |
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Numerator of Sum_{k=1..n} k^2*H_{n+k} where H_m = Sum_{i=1..m}. |
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+0
4
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| 0, 3, 61, 499, 1657, 19627, 270271, 566414, 10013422, 98370749, 101287949, 2390592307, 12232312607, 37470326437, 1107461467873, 139734625012252, 141993136103452, 36029639090623, 1351662817439371, 1369250429650771, 56824258828125611, 2471493519758983073
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OFFSET
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0,2
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REFERENCES
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M. Kauers and C. Schneider, Indefinite summation with unspecified summands, Discr. Math., 306 (2006), 2073-2083. See Eq. 4.
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EXAMPLE
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0, 3/2, 61/6, 499/15, 1657/21, 19627/126, 270271/990, 566414/1287, ...
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CROSSREFS
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Cf. A144653.
Sequence in context: A037209 A105430 A141979 this_sequence A120308 A009476 A125661
Adjacent sequences: A102717 A102718 A102719 this_sequence A102721 A102722 A102723
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KEYWORD
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nonn,frac
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Jan 28 2009
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