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A013548
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Numerator of [x^(2n)] of the Taylor series sech(cosec(x)-coth(x))= 1-x^2/72 +221*x^4/31104 +244939*x^6/235146240 +1846213*x^8/13544423424-...
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1, -1, 221, -244939, 1846213, -526960582373, 23968139993843, -5189795464140757, 36594801159269740631, -16691319229288614334663751, 11409300606349966887237659743, -198510162914463324156683262269
(list; graph; refs; listen; history; internal format)
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