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A275273
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p - n!, where p is the third smallest prime > n!.
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2
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4, 5, 7, 13, 17, 19, 37, 37, 31, 41, 19, 59, 109, 71, 179, 73, 59, 73, 113, 53, 47, 127, 149, 263, 107, 241, 59, 103, 317, 241, 317, 113, 197, 127, 109, 647, 397, 67, 281, 67, 211, 163, 109, 107, 439, 521, 709, 101, 383, 337, 397, 223, 337, 601, 281, 311
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OFFSET
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1,1
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COMMENTS
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Is every term except 4 a prime?
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LINKS
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EXAMPLE
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For n = 4, we have n! = 24, so that p = 37, and a(4) = 13.
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MATHEMATICA
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Table[NextPrime[n!, 3] - n!, {n, 1, 150}]
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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