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A089138
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).
+0
1
1, 15, 207, 2871, 40959, 604503, 9214479, 144391815, 2313641151, 37724683959, 623474304111, 10412641429479, 175337108637471, 2971909404000279, 50642191943368911, 866773853177022279, 14890613346688811391
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 4 15:11 EST 2009. Contains 170347 sequences.
AT&T Labs Research
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