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Search: id:A068215
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| A068215 |
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Denominator of Borwein integral of order 2n+1. |
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+0
2
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| 2, 6, 30, 210, 1890, 20790, 270270, 1896516717212415135141110350293750000, 1220462921565155916674902677397230198502690752000000000
(list; graph; listen)
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OFFSET
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0,1
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LINKS
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Eric Weisstein's World of Mathematics, Borwein Integrals
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MATHEMATICA
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i[n_] := Times@@(Sin[x/# ]&/@Range[1, n, 2])/x^((n+1)/2)/Pi; Denoninator[Table[Integrate[i[n], {x, 0, \[Infinity]}], {n, 1, 19, 2}]]
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CROSSREFS
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Cf. A068214.
Adjacent sequences: A068212 A068213 A068214 this_sequence A068216 A068217 A068218
Sequence in context: A127482 A118747 A129779 this_sequence A096775 A002110 A118491
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KEYWORD
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nonn,frac,nice
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AUTHOR
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Eric Weisstein (eric(AT)weisstein.com), Feb 21, 2002
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