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A064147
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Numbers n such that n!-1 and n!+1 have the same number of divisors, i.e. tau(n!-1) = tau(n!+1).
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1
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3, 8, 10, 13, 17, 20, 22, 24, 26, 34, 39, 53, 59, 61, 63, 69, 70, 76, 80, 87, 97, 99
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