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A074790
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(2n+1)!*sum(k=0,n,(-1)^k/(2k+1)!).
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0
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1, 5, 101, 4241, 305353, 33588829, 5239857325, 1100370038249, 299300650403729, 102360822438075317, 42991545423991633141, 21753721984539766369345, 13052233190723859821607001, 9162667699888149594768114701
(list; graph; refs; listen; history; internal format)
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