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A012684
tanh(tanh(x)*arctan(x))=2/2!*x^2-16/4!*x^4+80/6!*x^6+14464/8!*x^8...
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2, -16, 80, 14464, -1924352, 182456320, -4821633024, -5022496751616, 2274499602284544, -641508042469015552, 58440162971714846720, 91048038738283980652544, -93320295604487977397387264
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.
AT&T Labs Research
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