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A119881 E.g.f. exp(3x)sech(x). +0
2
1, 3, 8, 18, 32, 48, 128, 528, 512, -6912, 2048, 357888, 8192, -22351872, 32768, 1903822848, 131072, -209865080832, 524288, 29088886161408, 2097152, -4951498048929792, 8388608, 1015423886523629568, 33554432, -246921480190140874752, 134217728, 70251601603944228323328 (list; graph; listen)
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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.


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