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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
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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CROSSREFS
| Cf. A130817, A152272, A152273, A152274, A152275, A152276, A152277, A152278, A152280, A152281.
Sequence in context: A091590 A087487 A178368 * A015575 A152109 A124152
Adjacent sequences: A152276 A152277 A152278 * A152280 A152281 A152282
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KEYWORD
| base,nonn
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AUTHOR
| Jon E. Schoenfield (jonscho(AT)hiwaay.net), Dec 01 2008
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