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A103896
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Euler's totient of prime(n)! / prime(n)# + 1.
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2
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1, 1, 4, 20, 15700, 161520, 659739168, 11887243200, 115875912594352, 1360481062410358294032, 40999220870977029249072, 1854483563489396099991763032000, 106016408292727234808287504322403328
(list; graph; refs; listen; history; internal format)
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