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A119880 E.g.f. exp(2x)sech(x). +0
2
1, 2, 3, 2, -3, 2, 63, 2, -1383, 2, 50523, 2, -2702763, 2, 199360983, 2, -19391512143, 2, 2404879675443, 2, -370371188237523, 2, 69348874393137903, 2, -15514534163557086903, 2, 4087072509293123892363, 2, -1252259641403629865468283, 2, 441543893249023104553682823 (list; graph; listen)
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Last modified December 17 13:29 EST 2009. Contains 170826 sequences.


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