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Search: id:A130426
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| A130426 |
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a(n) = denominator of sum{k=1 to n} 1/k^(n+1-k). |
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+0
2
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| 1, 2, 12, 72, 1080, 129600, 54432000, 22861440000, 9601804800000, 4032758016000000, 18631342033920000000, 86076800196710400000000, 5169772619814426624000000000, 310496543546054463037440000000000
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OFFSET
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1,2
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MATHEMATICA
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Table[Denominator[Sum[1/k^(n + 1 - k), {k, 1, n}]], {n, 1, 20}] - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), May 30 2007
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CROSSREFS
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Cf. A130425, A003101.
Sequence in context: A144086 A005443 A002867 this_sequence A002397 A037515 A037718
Adjacent sequences: A130423 A130424 A130425 this_sequence A130427 A130428 A130429
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KEYWORD
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frac,nonn
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AUTHOR
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Leroy Quet (q1qq2qqq3qqqq(AT)yahoo.com), May 26 2007
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EXTENSIONS
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More terms from Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), May 30 2007
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