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A013514
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sec(sec(x)-sech(x)) = 1+12/4!*x^4+15232/8!*x^8+128432832/12!*x^12...
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1
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1, 12, 15232, 128432832, 3951670227712, 322851365262723072, 57788996387839852122112, 19922979338554898934445228032, 12060985210981195011358156168364032, 11959494452317925171268058230736426893312, 18398266125441128266076209600703368534212739072
(list; graph; refs; listen; history; internal format)
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