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Search: id:A089138
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| A089138 |
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a(n) = (3^(2*n))*(integral_{x=0 to 1} (1+x^3)^n dx)/(integral_{x=0 to 1} (1-x^3)^n dx). |
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+0
1
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| 1, 15, 207, 2871, 40959, 604503, 9214479, 144391815, 2313641151, 37724683959, 623474304111, 10412641429479, 175337108637471, 2971909404000279, 50642191943368911, 866773853177022279, 14890613346688811391
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OFFSET
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0,2
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EXAMPLE
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a(3)=2871
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MATHEMATICA
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f[n_] := 3^(2n)* Integrate[(1 + x^3)^n, {x, 0, 1}]/Integrate[(1 - x^3)^n, {x, 0, 1}]; Table[ f[n], {n, 0, 18}] (from Robert G. Wilson v Dec 22 2003)
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CROSSREFS
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Sequence in context: A061637 A063906 A078265 this_sequence A051813 A028230 A122572
Adjacent sequences: A089135 A089136 A089137 this_sequence A089139 A089140 A089141
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KEYWORD
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nonn
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AUTHOR
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Al Hakanson (hawkuu(AT)excite.com), Dec 05 2003
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EXTENSIONS
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More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Dec 22 2003
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