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A013554
-tan(cotan(x)-cotanh(x))=2*x+126/5!*x^5+25/7!*x^7+51326/9!*x^9...
+0
1
2, 0, 126, 25, 51326, 10929, 399223, 19660361, 452803663896, 100636857978, 5246019768064285, 1177349661754531, 165748040744729226, 27301091307299787326
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Maintained by
N. J. A. Sloane
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njas@research.att.com
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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.
AT&T Labs Research
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