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A152279
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Number of 7's among the digits of all n-digit primes.
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9
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1, 8, 69, 574, 5520, 52155, 502179, 4882568, 47709672, 468269438, 4610668567, 45510662200, 450072137956, 4457717637910
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OFFSET
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1,2
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LINKS
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CROSSREFS
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KEYWORD
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base,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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